5 Security features to look out for on timber bi-fold doors
August 16, 2017
Bi-fold doors are becoming increasing popular. They are often used to open out a room, offering increased light, and during summer months, joining inside space with outside living. Timber is a popular material choice, especially for country or heritage buildings and the doors are often hand crafted and installed by a joiner.
But how can you make sure these doors are secure? Here’s five security features to look out for when installing timber bi-fold doors.
1. The door gear and locks should be Secured by Design Accredited. Secured by Design (SBD), the national police crime prevention initiative, encourages manufacturers of products like doors and windows to attain SBD’s Police Preferred Specification. This accreditation requires independent third-party certification from a United Kingdom Accreditation Service (UKAS). This helps ensure quality over time, rather than the one-off testing required by the Building Regulations. Because SBD products are more robust to resist physical attack, they last longer and require less maintenance.
SBD works closely with UK Police Forces and a wide range of other organisations, including National and Local Government, British and European Standards authorities, the construction industry, trade associations and manufacturers to achieve sustainable reductions in crime through design and other approaches, to enable people to live in a safer society.
2. Multi-point locks are often associated with PVCu or aluminium doors, but they are also used on timber door sets. Multipoint locks are available in a variety of designs, but generally include a centrally located deadbolt and a live bolt (latch), at least two hook bolts and sometimes a pair of compression bolts. Multipoint locks secure the door in several places with one turn of a key and should be installed with a tamper proof cylinder that resist attacks.
3. The door should be installed with easy to adjust fittings where the adjustable points can only be released from the inside of the door. This prevents tampering with hinges and other components that if fitted in a way that’s accessible from outside a burglar could attempt to remove the door.
4. Roller units should have a non-removable heavy duty solid hinge pin to avoid compromising security.
5. Bi-fold doors should have flush bolts. Flush bolts are installed in sets, with a locking flush bolt at the top (with a key) and a non- locking flush bolt at the bottom. The number of flush bolts installed depends on the number of doors, but typically for a four door set there would be four flush bolts, two at the top and two at the bottom of the doors. These firmly hold the door in place and secure the doors from any pressure on the outside.