Fire Door Installers London

Certified Fire Door Installers London

A wooden door must have a certified fire rating to be used in flats and shared properties across the capital. Golden Ratio Windows operates as Fire Door Installers London. We manufacture solid core timber doors that comply with all UK building regulations. The process of building a fire-resistant door requires specific materials. We do not use hollow cores or cheap veneers. Our team constructs the door blanks from solid, high-density timber. The weight of these doors is substantial. They require heavy-duty frames to support them over time. We reinforce the existing frames or build completely new ones depending on the condition of the property.

What Every Fire Door Includes

Requirements for Fire Door Installers London

Every fire door requires intumescent seals routed into the edges. These seals sit flush with the timber during normal use. If the temperature in the room rises above 200 degrees, the chemical composition of the seals changes. They rapidly expand to fill the gap between the door and the frame. This expansion creates an airtight barrier. Smoke inhalation causes more casualties than flames during a fire. Blocking smoke from travelling between rooms gives occupants vital time to evacuate.

The hinges must be made from Grade 13 stainless steel. Standard brass hinges will melt or warp under intense heat. If the hinges fail, the door drops out of the frame and the fire spreads. We fit three heavy-duty hinges to every door. We also install overhead closers so the door never remains open. A fire door left propped open provides zero protection. The tension on the closer is adjusted manually so the door shuts firmly but does not slam.

Gap tolerances around the frame are strictly regulated. The gap between the door edge and the frame must measure exactly between 3mm and 4mm. A gap larger than 4mm will allow smoke to bypass the intumescent seals before they fully expand. A gap smaller than 3mm will cause the door to bind and stick during normal weather fluctuations. As experienced Fire Door Installers London, we ensure these measurements are exact to pass local council building control inspections.

Legal guidelines for landlords and homeowners

If you own a House of Multiple Occupancy (HMO), fire doors are a strict legal requirement. Landlords face severe penalties for non-compliance. They are also mandatory in residential houses between an integral garage and the main hallway. We manufacture both FD30 and FD60 doors from solid timber. An FD30 rating provides 30 minutes of fire resistance. An FD60 rating provides 60 minutes. The thickness of the timber dictates the rating. FD30 doors are typically 44mm thick. FD60 doors are 54mm thick.

You do not need to install generic commercial doors in a residential property. Many homeowners worry that fire safety compliance will ruin the historical aesthetic of their Victorian or Edwardian home. This is incorrect. We design period-accurate wooden doors that match original architectural styles. We can replicate traditional four-panel and six-panel designs using solid timber. We apply exact mouldings and beading.

All fire doors are finished in our workshop before installation. We apply a protective primer and multiple coats of microporous paint. This paint allows the timber to breathe and prevents moisture build-up. We do not use standard gloss paints on fire doors. The paint must not interfere with the intumescent seals. The final installation takes a full day per door. The fitters must route the hinges perfectly and check the drop. If you hire professional Fire Door Installers London, you receive a finished product that looks historically accurate but performs to modern safety standards. We provide full FENSA certification and compliance documentation upon final handover.

The Golden Ratio Standard

Every fire door we build is constructed from solid, high-density timber cores — never hollow blanks or cheap veneers. We route in certified intumescent seals, fit Grade 13 stainless steel ironmongery, and hand over full FENSA certification and compliance documentation so your property passes inspection first time.