Fit complete door sets
Certification covers the whole assembly.
The fire door that looks perfect
Right leaf, wrong hinges, gap four millimetres too wide. No rating left at all.
How we work
Certification covers the assembly
A fire door is certified as a complete assembly, and almost every element is load-bearing on that certification: the leaf, the frame, the intumescent strips and smoke seals, the hinges, the closer, the latch, and the gap around the leaf. Change one, or fit it outside tolerance, and the rating can be lost entirely while the door still closes beautifully and looks compliant to anyone passing.
That is what makes installation the weak point rather than the product. A building owner can buy correctly specified doors and still end up with nothing, because the fitting was quick and nobody recorded the gaps. Handing over the installation details and certification evidence is what turns a door into something a fire risk assessment can rely on.
Staircases carry the same gap between appearance and compliance. Part K sets rise, going, headroom and the rule that a 100 mm sphere must not pass through guarding, which rules out several spindle spacings clients ask for. Refusing those is unpopular and the rule exists because small children fit through gaps.
Our principles
Three beliefs behind the method
Hand over the evidence
A door nobody documented proves nothing.
Part K is dimensional
The 100 mm rule is not a preference.
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A free on-site quote, with no obligation.