Intumescent fire seals expand with heat; smoke seals restrict cold smoke around the closed leaf.
Fire and Smoke Seals for Compatible Fire Doors
The gap around a fire door is part of its tested performance, not spare space for an arbitrary seal. MacBlair stocks fire and smoke door seals for compatible rated doors and frames where intumescent or smoke control is specified.
Match seal type, size, location and fire rating to the doorset evidence. Intumescent material responds to heat; a smoke brush or blade controls cold smoke. Some applications combine both.
Do not guess groove dimensions or substitute products. Installation, trimming and painting must follow the certificate, and damaged or painted-over seals should be assessed by a competent person. Check the wider door furniture range for compatible parts, and match the fixing arrangement with suitable door hinges where the installation requires them.
Fire Smoke Seals FAQ's
No. Type, size and position must match the door’s test evidence.
Only if the seal manufacturer and doorset instructions permit it. Paint must not obstruct smoke brushes or blades.
They are commonly rebated into the leaf or frame in the position stated by the certification.
Replace or professionally assess seals that are missing, damaged, loose or contaminated.