For added safety and security fit a spy hole and door chain or limiter. These will enable you to deal with callers to your front door whilst retaining a level of security.
UPVC/PVCU front doors are generally unsuitable for retro-fit security devices. Not only is the material not strong enough to support devices fitted with steel screws unless secured into the internal metal framework, but such changes to the original design may invalidate an existing warranty or possibly damage the integral locking assembly. If in doubt, consult the installer/manufacturer.
Modern designs will usually incorporate deadlock shoot bolts or a multi-point locking system, both throwing a number of bolts from the door into the frame. Under these circumstances there will not normally be any need for additional devices.
For more advice and a professional service call Horsham Locksmiths now on 01403 261466.
This information has been provided by the Metropolitan Police, more details can be found on their website at www.met.police.uk/crimeprevention/