SM Windows & Doors blog

Aluminium Bi-Fold Door Design Ideas for Your Home

SM Windows & Doors — Tue, 28 Jul 2026 14:30:00 GMT

Grey aluminium bifold doors have become the go to look for opening a room up to the garden, and it is easy to see why. Slim frames, a crisp finish and big panes of glass suit almost any home, from a Victorian terrace done tastefully to a bright new build. Here are some design ideas to help you picture the look and get the details right.

Why aluminium suits bifolds so well

Aluminium is strong enough to hold large panes in slim frames, which is exactly what a bifold needs. Less frame, more glass, and clean lines that look sharp whether the doors are open or closed. The powder coated finish also holds its colour well against the Yorkshire weather, so the look you choose is the look you keep.

That combination of strength and slimness is why the best bifolds are almost always aluminium, and why the design possibilities are so wide. Our aluminium sliding and bi-fold doors come in a broad range of finishes for this reason.

Grey: the modern classic

Anthracite grey is the most popular bifold colour by a distance, and it earns its place. The matt grey finish looks contemporary without shouting, works against red brick, pale render and grey render alike, and pairs neatly with grey window frames for a joined up look across the house.

Design ideas with grey: - Anthracite grey outside, white inside, so the doors read modern from the garden but keep a light, neutral feel indoors. - Grey throughout, for a bold, consistent look that suits open plan kitchens and extensions. - Grey frames with a flush threshold, for that seamless step out to a patio or garden room.

Grey suits period homes too, softening the modern edge of a big glass opening so it does not jar against older brickwork.

Black: bold and architectural

Matt black bifolds are the choice when you want the doors to make a statement. Black frames read as crisp lines around the glass, almost like a picture frame for the garden view. They look superb on both contemporary extensions and characterful older homes, echoing the black steel Crittall style windows that suit period properties.

Black works especially well: - Against white or pale render, for a striking contrast. - Paired with black window frames and black hardware, for a pulled together, architectural feel. - In a garden room or orangery, where the dark frames frame the greenery outside.

If you love the heritage steel look, our heritage aluminium windows and doors recreate that slim black profile with modern warmth.

Dual colour: best of both

You do not have to pick one colour for inside and out. Dual colour bifolds let you have, say, anthracite grey or black facing the garden and a soft white or grey inside to keep interiors light. It costs a little more but gives you the exterior drama and the interior calm in one door.

Design details that lift the look

The colour is the headline, but the details make it: - Slim sightlines. The thinner the frames, the more glass and the better the view. Ask about the sightline width. - Threshold choice. A flush threshold gives a near level, seamless step out, ideal for a garden room feel. A weathered threshold suits exposed openings. - Handles and hardware. Match the metal to the frame, black on black, or brushed steel for a softer contrast. - A traffic door. A single leaf that opens on its own for everyday garden access, so you are not folding the whole set back to let the dog out. - Corner opening bifolds. On the right room, a set that opens around a corner with no post removes the wall entirely for a dramatic indoor outdoor space.

Making it work with your home

The best bifold design is the one that suits your house. On a modern extension, go bold with black or full grey and slim frames. On a period home, grey often sits more comfortably against old brick, and matching the frames to your windows keeps everything tidy. For a garden facing living room or a new orangery, the doors become the main event, so it is worth spending on the finish and glazing.

As a rough 2026 guide, aluminium bifolds run from around 2,500 to 6,000 pounds and up supplied and fitted, depending on size, colour and the number of leaves. Dual colour and premium finishes add a little. Prices vary a lot with the opening, so get a quote for your own home.

FAQs

Are grey aluminium bifold doors a good choice?

Yes. Anthracite grey is the most popular bifold finish because it looks contemporary without being loud, suits red brick, render and grey homes alike, and pairs neatly with grey window frames. The powder coated finish also holds its colour well outdoors.

What is the most popular colour for aluminium bifold doors?

Anthracite grey is by far the most popular, followed by matt black. Both suit modern and period homes, and dual colour options let you have a bold shade outside with a lighter finish inside.

Do black bifold doors suit older homes?

They can look excellent. Black frames echo the slim steel Crittall style windows found on period properties, so they suit characterful homes as well as contemporary extensions, especially against pale render or brick.

Can I have a different colour inside and out?

Yes, with dual colour bifolds. A common choice is anthracite grey or black facing the garden and white or grey inside to keep the room light. It costs a little more but gives you both looks in one door.

How much do aluminium bifold doors cost?

As a rough 2026 guide, around 2,500 to 6,000 pounds and up supplied and fitted, depending on size, colour and the number of leaves. Dual colour and premium finishes add a little. Get a quote for your own opening.

Want to see the grey, black and dual colour finishes in the flesh? Download our latest brochure, or request a free quote and we will come and take a look.

Adding a Bay Window: Planning and Regs Basics

SM Windows & Doors — Tue, 28 Jul 2026 09:30:00 GMT

Turning a flat window into a bay adds light, space and a lot of character, but it is more involved than a straight swap. If you are thinking about adding a bay window, UK Building Regs and, in some cases, planning permission come into it, because you are changing the shape of the house rather than just the glass. Here is what to consider before work begins, with a reminder to confirm the current rules with your local authority.

Replacing a bay versus creating one

The rules depend a lot on what you are doing:

Replacing an existing bay like for like is usually straightforward, much like any window replacement, and often permitted development on the planning side.
Creating a brand new bay where there was a flat window is a bigger job, because it projects out beyond the wall and needs support, foundations and proper structural work.

That difference is the key to understanding which permissions apply, so be clear which one you are planning.

Does a new bay need planning permission?

For many houses, adding a bay to the front, side or rear can fall under permitted development, but this is not guaranteed. Planning permission is more likely to be needed if:

Your home is a flat or maisonette, where the usual rights do not apply
You are in a conservation area or your property is listed, both common in and around York
The bay projects beyond permitted limits or faces a road in a restricted area
An Article 4 direction has removed permitted development rights for your street

Because a bay changes the front of the house, it is exactly the kind of alteration local authorities take an interest in. A quick check before you commit is always worth it.

Building Regs and a new bay

This is where a new bay differs most from a simple window swap. Adding a bay window under UK Building Regs typically brings in several requirements, because you are creating a projecting structure:

Structural support. The bay needs proper support above and often new foundations below, since it carries load and projects from the wall. This usually means a structural design and Building Control involvement.
Foundations. A new bay that sits on the ground generally needs foundations to a suitable depth, which Building Control will want to inspect.
Thermal performance. The new glazing and any new solid parts must meet current energy standards.
Safety glazing. Glass in critical locations, such as low panes, must be toughened or laminated.
Escape and ventilation. As with any window work, escape provision from certain rooms and background ventilation apply.

Because of the structural and foundation side, a new bay is usually notified to Building Control rather than simply self-certified, unlike a like-for-like replacement. Standards are updated over time, so confirm the current requirements before starting.

The structural reality

The part homeowners underestimate is the structure above and below. When you push a window out into a bay, something has to carry the wall and roof load over the new opening, and something has to support the bay itself. On an upstairs bay this can mean cantilevered support or a design that ties back into the structure. It is entirely doable, and bays are added all the time, but it is a proper build rather than a window job, and it should be designed and signed off correctly.

Bays on York homes

Bay windows are part of the local look, especially on Victorian and Edwardian terraces and semis across York. If you are restoring or replacing a bay on a period home, matching the proportions and glazing bars matters as much as the paperwork, particularly in a conservation area. Our uPVC windows in York range includes bay configurations and heritage-style options that suit older homes, and we always check consents on sensitive properties before quoting.

For any new bay, the sensible order is: confirm planning with the local authority, get the structure designed, and involve Building Control from the start. Do it in that order and the job runs smoothly.

Rough 2026 costs

Prices vary a lot with size, material, glazing and the structural work involved, so treat these as broad 2026 guides. Replacing an existing bay like for like often lands somewhere around 1,500 to 3,500 pounds supplied and fitted. Creating a brand new bay, with foundations and structural work, is a bigger project and can run well beyond that once building work is included. For a figure based on your home, ask us for a quote.

FAQs

Do I need planning permission to add a bay window?

Sometimes. Adding a bay can be permitted development for many houses, but permission is more likely for flats, listed buildings, conservation areas, or where the bay exceeds set limits. Check with your local planning authority first.

Does a new bay window need Building Regulations approval?

Yes. A new bay involves structural support, usually foundations, energy performance and safety glazing, so it is typically notified to Building Control rather than self-certified. Confirm the current requirements before starting.

Is replacing an existing bay easier than adding a new one?

Much easier. A like-for-like bay replacement is treated like other window work and is often permitted development. Creating a brand new bay is a structural build with foundations, so it carries more requirements.

Do bay windows need foundations?

A new bay that sits on the ground generally needs foundations to a suitable depth, which Building Control will inspect. An upstairs bay needs proper structural support instead. Both should be designed correctly.

Are there special rules for bays in conservation areas?

There can be. Conservation areas often restrict permitted development, and appearance matters for street-facing changes. York has several conservation areas, so check with the local authority before ordering a new or replacement bay.

Want to see bay window styles for your home? Download our latest brochure, or request a free quote and we will pop out for a look.

Adding French Doors to a Wall: The Cost

SM Windows & Doors — Mon, 27 Jul 2026 14:30:00 GMT

Swapping an existing window or door for French doors is one thing. Cutting a brand new opening in a solid exterior wall is a bigger job altogether, and that is what pushes the price up. The cost to install French doors in an exterior wall in the UK covers far more than the doors themselves, because you are asking a builder to remove a chunk of load-bearing wall and hold the house up while they do it.

This guide breaks down what the work involves and what you can realistically expect to pay, so the figure does not catch you out.

Why cutting a new opening costs more

When you replace like for like, the opening already exists and the wall above is already supported. Creating a fresh opening means the wall above needs a new lintel to carry the load, and that changes the job from a fitting into a small building project.

The work usually runs like this:

Propping the wall with temporary supports (acrows and needles) so nothing moves.
Cutting the opening through brick or block, often through a double skin.
Fitting a structural lintel sized for the span and the load above.
Making good the reveals, plaster, floor and any brickwork on the outside.
Fitting the French doors and sealing them properly.

Every one of those steps adds labour, and a couple of them may need a structural engineer or building control sign-off. That is normal for this kind of work.

What it typically costs in 2026

As a rough 2026 guide, supplied and fitted:

The French doors themselves usually land around 1,200 to 2,500 pounds for a quality uPVC or aluminium set, more for wider or premium specs.
Cutting the opening and fitting the lintel often adds around 1,500 to 3,500 pounds, depending on the wall, the span and access.
Making good inside and out (plaster, flooring, brickwork, a bit of decorating) can add several hundred pounds more.

All in, a new opening with French doors frequently sits somewhere around 3,000 to 6,000 pounds, and sometimes higher on a tricky wall. These are guide ranges, not a quote. The only way to know your figure is to have someone look at the actual wall, so request a free quote and we will assess it properly.

The things that move the price

A few factors make a real difference to the final number:

Wall type and thickness. A solid stone wall on an older York property is harder work than a modern cavity wall.
The span. Wider doors need a bigger, pricier lintel and more propping.
Whether the wall is load-bearing. Most external walls are, which means proper structural support.
Access. A ground-floor rear wall with easy access is cheaper than an awkward, tight spot.
The door spec. A slim aluminium set costs more than a standard uPVC one, though it can look superb. Our uPVC doors range shows where a sensible set sits.

Do you need permissions?

For most homes, adding French doors to a rear wall falls under permitted development, but the structural work almost always needs Building Regulations approval, and the new opening must meet current rules on lintels, thermal performance and safety glazing. If you are in a conservation area or the house is listed, which is common around central York, there may be extra planning considerations. Rules change, so always check with your local authority before you commit.

Is it worth the outlay?

For most people, yes. A set of French doors turns a dark room with a small window into a bright space that opens onto the garden, and that lift in light and connection to outside is hard to put a price on. It also tends to add appeal when you come to sell.

If your budget is tight, it is worth knowing that replacing an existing large window with French doors, where the opening is already there, is a good deal cheaper because you skip most of the structural work. We can talk you through both routes when we visit. If your current doors are simply tired or dropping, our repairs team may be able to sort them without a full rebuild.

FAQs

How much does it cost to put French doors into a wall in the UK?

As a rough 2026 guide, creating a new opening and fitting French doors often costs around 3,000 to 6,000 pounds all in, covering the doors, the structural work and making good. A solid or wide wall pushes it higher. Get a quote for a firm figure, as every wall is different.

Do I need Building Regulations approval to cut a new opening?

Almost always, yes. Cutting into a load-bearing wall and fitting a lintel is structural work that needs Building Regulations approval, and the glazing and thermal performance must meet current standards. Check with your local authority, as rules change.

Is it cheaper to replace a window with French doors?

Usually much cheaper, because the opening already exists and the wall above is already supported. You avoid most of the propping, cutting and lintel work, so you are mainly paying for the doors and the fitting.

How long does the job take?

A straightforward new opening with French doors often takes a few days, allowing time for propping, cutting, the lintel, fitting and making good. A harder wall or extra plastering and decorating can stretch it out a little.

Want to see the full range of styles and finishes before you decide? Download our latest brochure, or request a free quote and we will pop out for a look at the wall.

A-Rated or C-Rated Windows? Is the Upgrade Worth It

SM Windows & Doors — Mon, 27 Jul 2026 09:30:00 GMT

When you are choosing new glazing, you will see windows sorted into energy bands, and be nudged towards the higher ones. So in the A-rated vs C-rated windows debate, is the upgrade genuinely worth paying for, or is it a badge to justify a dearer window? Here is a straight answer, with the real gains and the real costs laid out.

What the ratings mean

Windows carry an energy rating a bit like the label on a fridge, running from the top band down through B, C and lower. The rating rolls three things into one score:

Heat loss through the window, measured as the U-value. Lower is better.
Solar gain, the useful warmth the window lets in from the sun.
Air leakage, how draughty the window is.

Put together, a higher band means a more efficient window. Both A-rated and C-rated are modern double glazing and both are a big step up from old single glazing or worn units. A-rated simply sits higher on the scale, holding heat in a bit better and making slightly more of the sun's warmth.

How big is the real difference?

In everyday terms, smaller than the alphabet gap makes it sound. A-rated and C-rated are neighbours on the scale, not opposite ends. Both are proper, efficient double glazing.

An A-rated window loses a little less heat and feels marginally warmer near the glass.
A C-rated window is still a solid, efficient unit that performs well in a normal home.

The larger the jump you are making, the more it matters. Coming from single glazing or tired old windows, the leap to either A or C is transformative, and the extra step from C to A is comparatively small.

The cost side

As a rough 2026 guide for a standard uPVC casement, supplied and fitted:

C-rated double glazing: roughly 400 to 800 pounds per window.
A-rated double glazing: roughly 450 to 950 pounds per window.

Often the gap is modest, because efficient glass and warm-edge spacers have become standard rather than a costly extra. Sometimes a particular frame or glass spec widens it. Either way, across a whole house even a small per-window difference adds up, so look at your actual quote. Prices vary with size, style and glazing, so get one for your own windows.

Does the upgrade pay back?

On bills alone, slowly. A-rated windows lose less heat than C-rated, so they can trim your heating costs, but the saving between two modern double-glazed options is gradual. If you are expecting the energy savings to repay the premium quickly, they usually will not, particularly when both options are already efficient.

Where the upgrade earns its keep is comfort. A slightly warmer inner pane means fewer cold spots, a touch less condensation on cold mornings and a more even feel to the room. If the price gap on your quote is small, that comfort makes A-rated an easy choice.

When to pick A-rated

The price difference is small, which it often is, so you may as well take the better window.
You have cold or exposed rooms where every bit of warmth helps.
You are staying long term and want the most comfortable result.
You are chasing efficiency in a wider renovation.

When C-rated is fine

The A-rated jump on your quote is unusually large, stretching the payback.
Budget is tight and the money would do more on loft insulation or a better door.
The rooms are already comfortable and you simply want reliable modern double glazing.

There is no wrong answer here. C-rated is a genuinely good, efficient window, not a poor relation.

The thing that matters more than the letter

Fitting. A brilliant A-rated window fitted badly, with gaps and poor sealing, will underperform a C-rated window that is installed properly. So whichever band you choose, the quality of the installer matters as much as the sticker. You can compare both standards across our uPVC windows range, and for the slim modern look our aluminium windows come highly efficient too. If you want a clear steer for your home, request a quote and we will talk it through honestly.

FAQs

What is the difference between A-rated and C-rated windows?

Both are efficient modern double glazing, but A-rated sits higher on the energy scale, losing slightly less heat and making a little more of the sun's warmth. In everyday use A-rated feels marginally warmer near the glass, and the price gap is often small.

Is it worth upgrading from C-rated to A-rated windows?

If the price difference on your quote is small, usually yes, for the extra comfort. If it is large, or your budget is tight, C-rated is a perfectly good efficient window. The saving on bills between the two is gradual, so comfort is the main reason to upgrade.

Do A-rated windows save much on heating bills?

They lose less heat than C-rated windows, so they can lower bills, but the saving between two modern double-glazed options is gradual rather than dramatic. Most people find the real benefit is comfort, such as fewer cold spots and less condensation.

Does a higher window rating always mean a better window?

Not on its own. The rating measures energy performance, but fitting quality, security and build all matter too. A well-fitted C-rated window can outperform a poorly fitted A-rated one, so choose a good installer as well as a good rating.

Want to see the full range of styles and finishes? Download our latest brochure, or request a free quote and we will pop out for a look.

A Guide to Sash Windows in York's Older Homes

SM Windows & Doors — Fri, 24 Jul 2026 14:30:00 GMT

If you own a Georgian or Victorian property in the city, you will know that sash windows are part of what makes it special. But they can also be draughty, sticky and cold, which leaves owners wondering what to do. This guide to sash windows in York's older homes walks through your real options, from repairing the originals to upgrading or replacing them, all while keeping that lovely period look.

Why sash windows matter here

York is full of older housing, and the sliding sash window is a big part of its character. On a period terrace or townhouse, the tall proportions, slim glazing bars and vertical sliding sashes are part of the design, not just glass in a hole. Get them wrong and the whole facade looks off, which is why the choice deserves a bit of care.

Option one: repair the originals

Do not write off your existing sashes too quickly. Timber sash windows were built to be repaired, and a lot of the common complaints have straightforward fixes:

Draughts can be sorted with modern draught-proofing brushes and seals let into the frame.
Sticking or rattling sashes are often just worn cords, weights or paint build-up, all fixable.
Rot in one section can frequently be cut out and spliced rather than replacing the whole window.

If the frames are largely sound, repair and draught-proofing is usually the cheapest, most sympathetic route, and it keeps the genuine original joinery. We handle this kind of window and door repair, and we will tell you honestly when the originals are worth saving.

Option two: upgrade the glazing

Many owners want the period look but with modern comfort. There are a few ways to bridge that gap:

Slim-profile double glazing can sometimes be fitted into refurbished or new timber sashes, giving better insulation while keeping delicate sightlines.
Secondary glazing, a discreet second pane fitted inside the existing window, cuts draughts and noise without touching the original at all, which is handy where the outside must stay unchanged.

These upgrades noticeably improve warmth and reduce street noise, which matters on busier York roads.

Option three: replace with sympathetic new sashes

If the originals are too far gone, replacement is the answer. The key is choosing new windows that respect the proportions and detailing of the old ones. Modern timber sashes can be made to match, and there are also convincing uPVC and aluminium sash-style windows with slim sightlines, run-through horns and astragal bars that echo the traditional look while cutting the maintenance. Our uPVC window range includes heritage-influenced styles worth a look.

The right choice depends on your home, your budget and, crucially, the rules where you live.

Conservation areas and listed buildings

This is the big one in York. If your home is listed or sits in a conservation area, there are often strict rules about what you can change, and they frequently favour timber and like-for-like detailing. Sometimes you need consent before altering the windows at all. These rules vary from area to area and change over time, so always check the current position with City of York Council or a conservation officer before you commit. It is far cheaper to ask first than to undo work later.

What it tends to cost

As a rough 2026 guide, repairing and draught-proofing a sash window is usually the most affordable option, often a few hundred pounds per window depending on the work. New sympathetic sash windows, supplied and fitted, generally run higher, commonly from around 800 pounds each and climbing for timber and heritage detailing. These are ballpark figures, not a quote, since the material, size and condition of your openings all change the sum. For a firm price, request a quote and we will assess your windows in person.

The honest bottom line

For York's older homes, the sympathetic path is usually best: repair and draught-proof where the originals are sound, upgrade the glazing where you want more comfort, and replace with matching sashes only when the timber is beyond saving. Keep the proportions right and check the local rules, and you get a warmer home that still looks the part.

FAQs

Should I repair or replace my sash windows?

If the timber is largely sound, repair and draught-proofing is usually cheaper and keeps the original joinery. Replace only when the frames are badly rotten or beyond economic repair. We will give you an honest assessment of which makes sense for your windows.

Can I put double glazing in a sash window?

Often yes. Slim-profile double glazing can be fitted into refurbished or new timber sashes, and secondary glazing adds a discreet inner pane without altering the original. Both improve warmth and cut noise, though conservation rules may limit your options, so check first.

Do I need permission to change sash windows in York?

Possibly. Listed buildings and conservation areas often have rules that require consent or favour like-for-like timber windows. These rules vary and change, so check the current position with City of York Council or a conservation officer before making changes.

How do I stop my sash windows being draughty?

Modern draught-proofing brushes and seals can be let into the frame to close the gaps around the sashes. Worn cords and weights can be renewed so the sashes sit snugly. Secondary glazing is another effective option where you want to keep the original window untouched.

Are uPVC sash windows a good match for a period home?

Modern uPVC sash-style windows with slim sightlines, run-through horns and astragal bars can look surprisingly authentic and cut the maintenance. They suit many older homes, but in conservation areas or on listed buildings, timber is often required, so check local rules first.

Want to see heritage-style and timber-look sash options? Download our latest brochure, or request a free quote and we will take a proper look at your windows.

7 Common Sash Window Problems and How to Fix Them

SM Windows & Doors — Fri, 24 Jul 2026 09:30:00 GMT

Timber sash windows are a lovely feature on York's period terraces, but they do ask for a bit of care. This run through the 7 common sash window problems and how to fix them covers what usually goes wrong, what you can sort yourself, and where a specialist saves you from making things worse.

Sash windows are repairable by design, which is part of their charm. Most faults are down to age and wear rather than anything terminal.

1. Sticking and painted shut sashes

The classic. Decades of paint build up in the channels and glue the sash in place, or damp swells the timber so it binds.

The fix: run a knife or a specialist sash tool along the paint line to break the seal, then work the sash gently until it frees. Clean the channels and rub a candle or beeswax along them so the sash glides. If the timber has swollen from damp, easing a little off the edge helps, but take your time.

2. Rattling in the wind

A sash that rattles has too much play between it and the frame, usually because the beading has worn or the sash has shrunk over the years.

The fix: fitting or renewing the parting bead and staff bead takes up the slack, and brush pile draught strips tighten it further while sealing out draughts at the same time. It is one job that fixes two problems.

3. Broken sash cords

If a window slams shut or will not stay up, a sash cord has snapped. On a traditional box sash the cords run over pulleys to counterweights hidden in the frame.

The fix: this means opening up the box, retrieving the weight and rethreading a new cord, then balancing it. It is doable for a confident DIYer but genuinely fiddly, and you often find both cords are near the end of their life. Many people have both sides done at once by a specialist to save a repeat visit.

4. Draughts around the sashes

Older sash windows were never tightly sealed, so cold air slips around the edges and past the meeting rails.

The fix: brush pile draught proofing set into routed grooves seals the gaps without stopping the windows working. It makes a real difference to comfort and heating bills, and it is the single most worthwhile upgrade for a period sash. Our repair and maintenance team fits discreet draught proofing that keeps the original look.

5. Rotten timber

Damp gets into the bottom rail and the sill, and untreated it turns to soft rot. Poke suspect areas with a screwdriver: if it sinks in, the timber has gone.

The fix: small areas can be cut out and repaired with resin filler or a spliced in section of new timber. Widespread rot means replacing the sash or the sill. Catching it early keeps the repair small, so deal with flaking paint before the water gets in behind it.

6. Loose or wobbly joints

The corner joints of a sash can work loose over decades, leaving the frame flexing and out of square.

The fix: the sash is taken apart at the joints, cleaned, re-glued and cramped back square, sometimes with the joints pinned. It is a workshop job rather than a windowsill one, but it saves an otherwise sound window.

7. Cloudy or cracked glass

Original single glazing cracks, and where slim double glazed units have been fitted they can mist if the seal fails.

The fix: cracked panes are reputtied and reglazed, keeping the original bars and proportions. A misted double glazed unit is replaced rather than repaired. On a heritage window it is worth matching the glass sympathetically, and a specialist will source the right style.

What you can DIY and what you cannot

Cleaning channels, freeing a stuck sash, waxing runners and basic draught strips are all fair game for a handy homeowner. Broken cords, rotten timber, loose joints and reglazing are where experience pays off, both to protect the window and because sash work on a period or conservation area property is worth doing sympathetically. In York's conservation areas there may also be rules on what you can change, so check with the local authority before altering original windows, as guidance changes.

If your sashes are beyond sensible repair, timber and modern alternatives can echo the original look. Our casement windows suit some period homes, though for a listed or conservation setting a like for like sash repair is usually the right call.

FAQs

Are sash windows worth repairing rather than replacing?

Usually yes. Sash windows are built to be repaired, so even tired ones can often be brought back to life with new cords, draught proofing and localised timber repairs. On period and conservation area homes, repairing the original is frequently better value and more in keeping than replacing.

How do I stop my sash windows rattling?

Rattling comes from too much play between the sash and frame. Renewing the beading and adding brush pile draught strips takes up the slack and seals the gaps at the same time, which stops the rattle and cuts draughts. It is one of the most satisfying quick wins on an old sash.

Can I replace a sash cord myself?

It is possible if you are confident, but it means opening up the box frame, retrieving the counterweight and rebalancing the sash, which is fiddly. Both cords are often worn together, so many people have a specialist do both sides at once to avoid a repeat job.

Do sash windows in a conservation area have special rules?

They can. In conservation areas and on listed buildings there may be restrictions on altering or replacing original windows. Repairs that keep the original appearance are usually fine, but check with your local authority before major changes, as the rules vary and are updated over time.

Want to see the full range of styles and finishes? Download our latest brochure, or request a free quote and we will pop out for a look.

5 Things to Check in a Window Manufacturer

SM Windows & Doors — Thu, 23 Jul 2026 14:30:00 GMT

Choosing new windows is really two decisions: what windows you want, and who you trust to make and fit them. The second one gets less attention, but it matters just as much. There are plenty of window manufacturers in the UK, and the best window manufacturers stand out not on their sales patter but on the things you can actually check.

Here are five to look at before you sign anything.

1. The quality of the product

Start with what you are actually buying. A good window uses quality profiles, proper reinforcement, well-made glazing units and solid hardware. Cheaper windows cut back on the parts you cannot see: thinner frames, lighter reinforcement, budget seals and basic locks.

Ask what the frames are made of, how they are reinforced, what glazing and hardware come as standard, and where the windows are manufactured. A manufacturer confident in their product will answer plainly. You can see the sort of spec that lasts in our uPVC windows range.

2. The guarantees on offer

A guarantee tells you how much faith a maker has in their own work. Look for cover on:

The frames and profiles, often ten years or more.
The glazing units, against misting and seal failure.
The hardware, the locks, hinges and handles.
The fitting, which is separate from the product guarantee.

Read what the guarantee actually covers and, importantly, whether it is backed so it still stands if the company changes. A long guarantee is only as good as the firm behind it.

3. Accreditations and standards

Reputable manufacturers and installers hold recognised accreditations. Look for things like FENSA or a similar competent-person scheme for Building Regulations compliance on fitted windows, and recognised security and quality standards on the products.

These are not just badges. They mean the work is registered, checked and held to a standard. Rules and schemes change, so it is worth confirming what is current with your local authority if you are unsure what applies.

4. Genuine reviews and reputation

What do real customers say? Look beyond the glowing quotes on a company's own homepage and check independent reviews, how the firm responds to problems, and whether people mention the after-sales service, not just the sale.

A good local reputation is hard to fake and worth a lot. Word of mouth around York and North Yorkshire tells you plenty. You can read what our own customers say on our customer reviews page, and our about page explains who we are and how we work.

5. The fitting and after-sales service

This is the one people overlook. A superb window fitted badly, with gaps, poor sealing or a frame that is not square, will never perform. The quality of the installation is as important as the window itself.

Ask who does the fitting, whether they are the company's own team or subcontractors, and what happens if something needs adjusting after the job. A manufacturer that also fits and stands behind the work is usually a safer bet than one that drops the windows and walks away.

Putting it together

The best window manufacturers in the UK are the ones that get all five right: a solid product, real guarantees, proper accreditations, an honest reputation and a fitting team that cares. Cheap quotes are tempting, but a window is a long-term buy, and cutting corners on any of these tends to cost more later.

FAQs

How do I choose the best window manufacturer in the UK?

Check five things: the quality of the product, the guarantees, the accreditations, genuine independent reviews and the fitting and after-sales service. A firm that scores well on all five is a safer bet than the cheapest quote, since windows are a long-term buy.

What accreditations should a window company have?

Look for a competent-person scheme such as FENSA or a similar body for Building Regulations compliance on fitted windows, plus recognised security and quality standards on the products. Schemes change over time, so confirm what is current with your local authority if unsure.

Are longer window guarantees better?

A longer guarantee is a good sign, but only if it is properly backed so it still stands if the company changes hands. Check what the guarantee actually covers, including frames, glazing, hardware and fitting, rather than judging on the headline number alone.

Does it matter who fits the windows?

Very much. A quality window fitted badly, with gaps or poor sealing, will underperform. Ask whether the company uses its own trained fitters or subcontractors, and what after-sales support you get if something needs adjusting later.

Want to see the range and spec for yourself? Download our latest brochure, or request a free quote and we will pop out for a look.

5 Things to Check in a Double Glazing Quote

SM Windows & Doors — Thu, 23 Jul 2026 09:30:00 GMT

Getting a few quotes is the smart way to buy windows, but the cheapest number on the page is not always the best deal. To compare fairly and land the best double glazing prices, you need to look past the headline figure at what is actually included. Here are five things worth checking in every quote before you sign anything.

1. Is it a like-for-like comparison?

The most common trap is comparing quotes that are not for the same thing. One firm might price uPVC casements, another slim aluminium frames, and a third might include a bay window in the count. Before you compare prices, make sure each quote covers:

The same number and size of windows
The same frame material and style
The same glass spec (Low-E, toughened where needed, warm-edge spacers)
The same colour or finish

Once you are comparing like for like, the numbers suddenly mean something. It is the only fair way to judge value.

2. What is the glass and frame spec?

A low price often hides a lower spec, so dig into the detail. Ask what U-value or energy rating the windows carry, whether the glass has a Low-E coating, and whether the spacer bar is a warm-edge type. These affect how warm your home stays through a Yorkshire winter and how much you save on heating.

On the frame side, check the material and whether the colour or woodgrain finish you want is included or costs extra. A cheap quote with a poor spec can cost you more in heating over the years than a slightly dearer window that keeps the warmth in. Our uPVC windows in York pages explain the specs we fit, which gives you a benchmark to compare against.

3. Is fitting and making good included?

Supply-only prices look cheaper because they leave out the labour. A proper quote should spell out that fitting is included, along with the finishing touches that are easy to forget:

Removing and disposing of the old windows
Sealing and making good around the new frames
Any plastering or trims needed inside
Cleaning up and taking away the waste

If a quote is vague about who does the fitting and what "making good" covers, ask. Hidden extras here are where a tempting price quietly climbs.

4. What guarantee and registration comes with it?

A window is a long-term buy, so the guarantee matters. Check how long both the windows and the installation are covered for, and what the guarantee actually includes. A ten-year guarantee that covers the sealed units, the frames and the fitting is worth more than a headline number with lots of exclusions.

Also check the work will be registered so it meets Building Regulations, which is normal for replacement windows. Rules can change, so it is worth confirming the current requirements or asking the installer to explain how they handle it. It is also reassuring to know they offer window and door repairs if anything needs attention later.

5. Who are you actually buying from?

Behind every quote is a company, and it pays to know who they are. Look for a local firm with a real address and a track record, rather than a hard-sell operation. A few quick checks help:

Read their customer reviews to see how past jobs went
Check they cover your area on their areas served page
See how long they have been trading and whether they are local to York

A friendly local installer who will pop back if there is a snag is worth a lot more than a slightly cheaper deal from a firm you cannot reach afterwards.

Rough 2026 prices

Prices vary with material, size, glass and how many windows you do at once, so treat these as broad 2026 guides. A supplied and fitted uPVC casement window often lands around 400 to 800 pounds, and a full house of windows can run into several thousand depending on the count and spec. For a clear, itemised figure, request a free quote and we will measure up and explain every line.

FAQs

How do I compare double glazing quotes fairly?

Make sure each quote covers the same number, size, material and glass spec, then compare. A like-for-like comparison is the only way to judge which offers the best double glazing prices.

Why are some double glazing quotes so much cheaper?

A low price often means a lower spec, supply-only pricing, or extras left out like making good and disposal. Read the detail before assuming a cheap quote is the best value.

What should a double glazing quote include?

It should list the windows, sizes, material, glass spec, fitting, removal and disposal of the old units, making good, the guarantee and confirmation the work meets Building Regulations.

Is a longer guarantee always better?

Not on its own. Check what the guarantee actually covers, including the frames, sealed units and the fitting, rather than just the number of years.

How much does a full house of double glazing cost in 2026?

It varies a lot with the number of windows and the spec. As a rough 2026 guide, expect a full house to run into several thousand pounds. Get an itemised quote for an accurate figure.

Want to see the full range of styles and finishes before you compare quotes? Download our latest brochure, or request a free quote and we will pop out for a look.

5 Things to Check Before Buying a Front Door

SM Windows & Doors — Wed, 22 Jul 2026 14:30:00 GMT

A front door is one of those buys you only make every couple of decades, so it pays to get it right. The best front doors do three jobs at once: they keep your home warm, keep it safe and look the part from the street. Before you part with any money, here are five things worth checking so you end up with a door you are happy with for years.

1. Security and locking

Your front door is the main way in, so security comes first. Look for a multipoint locking system that bolts the door into the frame at several points, not just a single latch. On top of that, check the cylinder is an anti-snap, anti-bump type, ideally one that meets a recognised standard.

A quick checklist when you compare doors:

Multipoint locking as standard
Anti-snap cylinder (look for a recognised kitemark or TS007 rating)
A solid frame that is fixed properly to the wall
Toughened or laminated glass if the door is glazed

If a door feels flimsy or the lock is an afterthought, keep looking. The best front doors treat security as part of the design, not an add-on.

2. Insulation and energy performance

A good front door keeps the warmth in and the draughts out, which matters a lot through a Yorkshire winter. Composite and modern uPVC doors have an insulating core that far outperforms an old timber door, and a well-fitted door should not let cold air whistle round the edges.

Ask about the door's energy rating or U-value if you want to compare like for like. A lower U-value means better insulation. Also check the seals: good weather seals around the frame do as much to stop draughts as the door slab itself.

3. Material and how it will age

Front doors mainly come in three materials, and each behaves differently over time:

Composite doors have a tough outer skin and an insulating core. They resist warping and fading and need very little upkeep.
uPVC doors are the budget-friendly option, low maintenance and perfectly solid for many homes.
Timber doors look lovely, especially on period properties, but need repainting or oiling every few years to stay right.

Think about how much upkeep you are happy to do. If you want to fit it and forget it, composite tends to be the easy pick. If you love the look of wood and do not mind the maintenance, timber has real charm.

4. Style, colour and kerb appeal

The door sets the tone for the whole front of your house, so it is worth taking time over the look. York has everything from Victorian terraces to modern estates near the ring road, and the right style depends on the home. A period house usually suits a traditional panelled door in a heritage colour, while a newer property carries a clean, contemporary design.

Pick a colour that works with your brickwork and window frames, and do not forget the hardware. Handles, a letterplate, a knocker and house numbers are small details that pull the whole look together. Our composite doors in York range is a good place to see how colour and style change the feel of a door.

5. Fit, fitting and the guarantee

A brilliant door fitted badly will still let in draughts and can be a nightmare to open on a cold morning. Make sure the door is measured and fitted by someone who knows what they are doing, so it sits square and the locks line up first time.

Check what guarantee comes with the door and the installation, and whether the work will be registered so it meets Building Regulations. Rules around this can change, so it is worth checking the current requirements or asking your installer to confirm. If you ever need a tweak later, it is also handy to know they offer window and door repairs rather than only new fittings.

Rough 2026 prices

Prices vary with material, glazing, colour and hardware, so treat these as broad 2026 guides. A quality uPVC front door supplied and fitted often lands somewhere around 700 to 1,400 pounds, while a composite door tends to sit around 1,000 to 2,500 pounds depending on the design. For a figure based on your doorway, request a free quote and we will measure up and talk options through.

FAQs

What is the best material for a front door?

For most homes, composite offers the best balance of security, insulation and low maintenance. uPVC is a solid budget choice, and timber suits period homes if you are happy with the upkeep.

How much should I spend on a good front door?

As a rough 2026 guide, budget around 700 to 1,400 pounds for a fitted uPVC door and around 1,000 to 2,500 pounds for composite. Prices vary, so get a quote for your exact doorway.

How do I know a front door is secure?

Look for multipoint locking, an anti-snap cylinder that meets a recognised standard, toughened or laminated glass if glazed, and a frame fixed properly to the wall.

How long does a front door last?

A good composite or uPVC front door should last around 20 to 30 years with minimal upkeep. Timber can last just as long but needs regular repainting or oiling.

Do I need Building Regulations approval for a new front door?

Replacement doors usually need to meet Building Regulations for energy and safety, and the work is often registered on your behalf. Rules can change, so check the current requirements or ask your installer to confirm.

Want to see the full range of styles, colours and finishes? Download our latest brochure, or request a free quote and we will pop out for a look.

5 Things to Check Before Buying a Conservatory

SM Windows & Doors — Wed, 22 Jul 2026 09:30:00 GMT

A conservatory is a big buy and a lovely one, but it is easy to get carried away with the picture in the brochure and miss the practical bits. Some of the best uPVC windows, doors and conservatories fall down not on looks but on how they are planned and fitted. Before you sign anything, here are five things worth checking so you end up with a room you actually use all year.

1. Will it be comfortable in every season?

The old complaint about conservatories is that they roast in summer and freeze in winter. Modern ones are far better, but only if the glazing and roof are specified properly. Ask about the glass: energy efficient units with a solar control coating keep the heat down in July, while good sealed units and a well insulated roof hold warmth in January.

A quick comfort checklist:

Energy efficient double glazing as standard
Solar control or self-cleaning glass options
A roof that suits how you want to use the room
Trickle vents or opening windows for airflow

If the room is going to be a proper living space, it needs to feel right in a Yorkshire winter, not just on a bright spring afternoon.

2. Do you need planning permission?

Many conservatories fall under permitted development and do not need full planning permission, but not all. Size, height, how much of the garden it covers and whether you are in a conservation area all matter. York has plenty of conservation areas and period terraces where the rules are tighter.

Building Regulations can also apply depending on the design and how it connects to the house. Rules change, so check the current requirements with your local authority or ask your installer to confirm before work starts. It is far cheaper to get this right on paper than to unpick it later.

3. The base and how it is built

The part you never see matters most. A conservatory is only as good as the base it sits on. A poor foundation can lead to cracks, damp and doors that stop closing properly within a few years.

Ask how the base will be built, whether it suits your ground, and who is responsible for it. A reputable installer will treat the groundwork as seriously as the frames and glass, not as an afterthought to rush through.

4. Frames, glazing and security

The frames carry the whole room, so quality counts. uPVC is the popular choice for good reason: low maintenance, warm and hard wearing. Look at the glazing spec, the quality of the sealed units and the locking on any doors and opening windows.

Because a conservatory adds a lot of glass at ground level, security is worth a proper look. Multipoint locking on the doors, toughened or laminated glass and solid frames all help. Our conservatories and orangeries range shows how the frames and glass work together, and if you are picking windows for the rest of the house too, our uPVC windows in York use the same quality thinking.

5. The installer, the guarantee and the aftercare

A conservatory is only as good as the team that fits it. Check how long the company has been going, ask to see recent work, and read what past customers say. A tidy quote, clear timings and a proper written guarantee are all good signs.

Find out what the guarantee covers and for how long, and whether the same team handles any window and door repairs down the line. A firm that stands behind its work and comes back if something needs adjusting is worth paying a little more for.

Rough 2026 prices

Prices vary hugely with size, style, roof type and glazing, so treat these as broad 2026 guides. A modest lean-to conservatory supplied and fitted often starts somewhere around 10,000 to 15,000 pounds, while a larger Victorian or gable design with a solid or glass roof can run from around 20,000 to 35,000 pounds or more. For a figure based on your home, request a free quote and we will measure up and talk options through.

FAQs

How much does a conservatory cost in 2026?

As a rough 2026 guide, a smaller lean-to conservatory supplied and fitted often lands around 10,000 to 15,000 pounds, while larger styles with a solid or glass roof can run from around 20,000 to 35,000 pounds or more. Prices vary with size and spec, so get a quote for your home.

Do I need planning permission for a conservatory?

Many conservatories are covered by permitted development, but size, height, garden coverage and conservation areas can change that. Rules vary, so check the current requirements with your local authority or ask your installer to confirm.

Can you use a conservatory all year round?

Yes, with the right glazing and roof a modern conservatory stays comfortable through the seasons. Energy efficient glass, solar control coatings and a well insulated roof make the biggest difference.

How long does a good conservatory last?

A well built conservatory with quality frames and a proper base should last 20 years or more with minimal upkeep. The base and the fit matter as much as the frames for long term reliability.

Want to see the full range of styles, roofs and finishes? Download our latest brochure, or request a free quote and we will pop out for a look.