Window Standards
The British Standards Institute (BSI) sets standards for the common materials used in window frames. The BSI 'kitemark' indicates the manufacturer's products have been independently tested for weather tightness and mechanical performance. However, the basic BS number and kitemark are not endorsements of the product's security.
Timber (BS 644)
Existing timber frames on all windows should be checked to ensure they are robust and not suffering from damp, wear or rot, which will reduce their security. If defective, either repair or replace.
When fitting glass into timber frames and doors, wooden beading is recommended. Glue it and fix it with security screws. Panel pins and putty are both easy to remove.
Metal (BS 4873 - Aluminium or BS 6510 - Steel)
Older metal frames and fixings may suffer from corrosion and loose locking systems, reducing their effectiveness against burglary. Check at least annually and repair or replace as necessary.
PVCu (BS 7412 and BS 7413)
To be confident that a window offers improved security look for a written guarantee that it is manufactured and assembled by companies with ISO 9000 (formerly BS 5750) and has:
- Full metal reinforcing
- Multi chamber construction
- Impact modified PVCu
- Ventilation
Been independently tested for security (see Window
Security page)