- Timber doors should have a solid core, be at least 44mm thick and comply with BS 8220.
- Doors made of other materials must have passed the British Board of Agreement (BBA) security test for doors.
- Laminated glass should be used in all glazed areas. Wooden beading should be glued and fixed with security screws.
Front doors should have a viewer and door chain.
- Doors used as the final point of exit should be fitted with a lock which conforms to BS 3621 or the new BS EN 12209 security standards.
- Back doors should ideally be fitted with a five lever mortise deadlock and two sashlock (latch), one a third from the top, one a third from the bottom.
- Letter boxes should be positioned so that people cannot reach through and release the lock. A restrictor on the inside may be useful.
- When fitting security products always remember to use strong bolts and long screws.
- Make sure you have an escape route in case of fire or other emergency
Most patio doors made recently will incorporate a multi-point locking system. On older units and those without multi-point locking, fit special patio door locks to the top and bottom of the sliding door. Also ensure that an "anti-lift" device is used. This will prevent the sliding door being levered off its runners.
If the sliding door runs to the inside of the fixed panel, wedge a sturdy wood or metal bar/pole between it and the frame to restrict movement.