Yes, and by more than most people expect. Windows are one of the most common ways an opportunist burglar gets in, so good window locks security is a genuinely worthwhile upgrade, not just a box to tick. Here is how they help, what to look for and why your insurer may care too.
We fit and repair windows across York and North Yorkshire, so this is practical advice based on what actually keeps local homes secure.
Why windows are a weak point
Most break-ins are opportunist rather than planned. A thief looks for the quickest, quietest way in, and an unlocked or poorly secured window is exactly that. Ground-floor windows, windows hidden from the street and older windows with worn or basic catches are the usual targets.
A quality lock changes the maths. If a window will not open quickly and quietly, most opportunists move on rather than risk the time and noise of forcing it.
How good window locks help
Modern window locks improve security in a few ways at once:
- They physically resist forcing. A locked multipoint mechanism holds the sash tight at several points, not just one.
- They slow an intruder down. Time and noise are a burglar's enemies, and a stubborn window supplies both.
- They act as a visible deterrent. Windows that clearly lock up tight put opportunists off before they try.
- They add peace of mind for upstairs windows without leaving them permanently sealed.
Modern uPVC windows typically come with multipoint locking built in, which is a big step up from the single catch on many older windows.
What to look for
Not all window locks are equal. When you are checking or upgrading, look for:
- Multipoint locking: the mechanism engages at several points around the frame.
- Key-locking handles: so an opener cannot simply be reached and flipped, for example through a letterbox or a small forced gap.
- Good condition: worn, stiff or broken locks are as good as no lock.
- Laminated or toughened glass on vulnerable windows, which resists being broken through quietly.
If your existing locks are stiff, worn or broken, that is worth sorting sooner rather than later. Our window and door repairs page covers fixing or upgrading locks on windows you otherwise want to keep.
Window locks and your insurance
Many home insurance policies expect windows, especially accessible ones, to have working key-operated locks, and some ask you to use them. If a claim follows a break-in through an unlocked window that should have been secured, it can affect the outcome.
Policies differ, so do not assume. Check your own policy wording and confirm any specific lock requirements with your insurance provider, as this is one area where the details genuinely matter.
Simple habits that help
Locks only work if you use them. A few easy habits go a long way:
- Lock windows when you go out, even upstairs ones, and especially in warm weather.
- Keep window keys somewhere sensible but not on the sill next to the window.
- Do not leave ground-floor windows on the vent latch overnight.
- Get stiff or broken locks fixed rather than living with them.
FAQs
Do window locks actually deter burglars?
Yes. Most break-ins are opportunist, and a window that will not open quickly and quietly usually sends a thief looking elsewhere. Quality multipoint and key-locking mechanisms resist forcing and act as a visible deterrent.
Does my insurance require window locks?
Many policies expect accessible windows to have working key-operated locks, and some require you to use them. Policies vary, so check your own wording and confirm any specific requirements with your insurance provider.
Are modern uPVC windows more secure than old ones?
Generally yes. Modern uPVC windows usually come with multipoint locking that holds the sash at several points, which is far stronger than the single catch found on many older windows. Good glass options add further security.
Can I upgrade locks without replacing the whole window?
Often yes. If the window itself is sound, worn or basic locks can frequently be repaired or upgraded on their own, which is cheaper than a full replacement. An installer can tell you whether an upgrade or a new window makes more sense.
Want to make your windows more secure? Download our latest brochure to see the range, or request a free quote and we will take a look at what you have.