Your insurance company usually requires installing key operated locks on all of the following:
- Windows that are easily accessible from the ground.
- Windows that are easily accessible above flat roofs.
- Windows close to drainpipes or in reach of fire escapes.
Before you fit locks, check with your insurer for any conditions they may impose. Most window locks can be easily fitted and even skylights and bathroom fanlights will need a lock as a thief can fit in through any gap larger than a human head.
Locks which are visible from the outside provide the best deterrent as they force the thief to break the glass and risk attracting attention. Even if they do break the window, they still can’t open it so they risk cutting themselves when climbing through the broken glass. Net curtains prevent a burglar looking in and seeing what valuables you have for them to steal.
If you consider replacing your windows, look for British Standard BS 7950.
Depending on what type of window you have in your home, please look at the following advice:
UPVC/PVCU Windows
- Double glazed window locking systems should be fitted at the time of manufacture and located within the framework using the handle as a means of engaging the system.
Wooden Casement Windows
- Fit locks which secure the window to the fames rather than those which just secure that handle or stay bar.
- The best locks for this type of window are those which are secured to the frame rather than the window.
- If the window fits flush to the frame, fit mortice rack bolts (bolts fitted into the window and operated internally with a key.
- To test the security of your window, press each opening corner when the window closed and see if there is any movement. If there is no movement a lock in the centre of the frame will suffice; however if movement is seen fit a lock at each corner on the opening side.
Wooden Sliding Sash Windows
- Existing central sash fasteners can not be relied upon.
- Sash stops are strong and convenient to use and do not need to be removed from the window when opening fully. They can be set into the top frame allowing the window to be left open about 5” for ventilation but remains secure.
- An alternative form of lock is the dual screw, these bolt the two sashes together.
- The ‘tilt to clean’ sliding sash should be secured by fitting both sash stops and dual screws.
Aluminum
- Locking handles are satisfactory for most insurance proposes, however they are not totally secure as handles can snap or come loose from the frame.
- Care should be taken when fitting extra locks. Ensure that there is enough metal around the window to fit the lock without contacting the glass.
- A key operated clamp and a sliding window lock can also be fitted.
Louvre Windows
- These are especially vulnerable as thieves can easily take the slats out of the frame.
- Glue slats in to place and fit a special Louvre lock.
Keep windows locked, remove keys and keep them out of sight in a safe place.
