Fire doors are required in buildings where fire compartmentation is necessary, such as in commercial properties, public buildings, multi-occupancy residential units, and along escape routes. In the UK, Building Regulations (Approved Document B) outline where fire doors must be installed to comply with fire safety law.

Our fire doors are manufactured from severe duty particle cores or multi-layered solid timber from leading names in the industry. They often include intumescent seals, smoke seals, and fire-rated glazing for vision panels as required. At Derwen Joinery, our timber fire doors are tested for full compliance with Q-Mark certification standards.

A fire door is designed to withstand fire for a specified period, allowing occupants time to escape and emergency services time to respond. When exposed to heat, intumescent seals expand, sealing the gaps around the door to block flames. A fully certified fire door must be fitted as it’s specific Field of Application and will maintain compartmentation to help control the fire’s spread.

You can identify our BM Trada certified fire door sets by the associated fire plug often located on the top edge of the door leaf or within the door frame.

Fire doors are tested under controlled conditions in accordance with British Standards. The door is exposed to fire in a furnace to determine how long it can maintain integrity (preventing flames) and insulation (limiting heat transfer). To maintain certification such as Q-Mark certification fire doors must be manufactured exactly as tested and are subject to ongoing third-party audits for quality and compliance.