Where possible, front doors should have a door chain and viewer.
Letterboxes should be positioned so that people cannot reach through and release the lock.
Wooden back doors should ideally have a five-lever mortice deadlock and two bolts.
UPVC doors or doors with Euro Cylinders should have DHF TS007 3-Star, or Sold Secure Diamond Standard Anti-Bump replacement cylinders fitted. Always consult a Master Locksmiths Association accredited locksmith if you are uncertain. Badly-fitted Euro Cylinders can compromise your security.
When fitting security products always use strong bolts and long screws. Follow the manufacturer's guidelines or consult a specialist using the guide from the Master Locksmiths Association
Laminated safety glass should be used in all glazed areas.
Wooden beading should be glued and fixed securely.
In the case of UPVC, beading should be internal. Older UPVC windows (externally beaded) can have the beading sealed into place.