Restore the seal without creating new faults
Correct type selected
We match size, profile and smoke function to the door assembly.
Channels prepared
We remove failed material and clean the groove before refitting.
Corners kept continuous
We avoid careless breaks at joints and meeting points.
Replace seals that are missing or damaged
Fire door seals are small parts with important jobs. Intumescent material expands when exposed to heat, while a smoke seal helps limit the movement of cold smoke. Missing, loose or damaged strips can affect the intended performance of the complete door set. We inspect the channels around the leaf or frame and look for seals that have been painted over, fitted badly or broken at corners and meeting points. We also check what type of assembly is present before proposing intumescent seal replacement. Simply pushing any strip into the groove is not enough because dimensions, profile and smoke-control format need to suit the door.
Fit the right profile as one continuous system
We select the seal according to the available door information, required fire performance and smoke-control needs. The old material is removed carefully, and the channel is cleaned and prepared so the replacement can sit correctly. We fit the new strip continuously around the relevant edges, paying attention to corners and meeting points where careless gaps often appear. The work is coordinated with the leaf clearances because an unsuitable or badly positioned seal can interfere with closing. Once fitted, we check the door's movement and latch engagement. This supports the intended performance of the whole assembly rather than treating the strip as decorative trim.
Frequently asked questions
What is the difference between heat and smoke seals?
Intumescent material expands under heat, while smoke brushes or fins help restrict cold-smoke movement. Some products combine both functions, but the correct format depends on the door specification.
Can painted-over fire door seals be left in place?
Paint can interfere with the condition and operation of some seals. We inspect the fitted material, available door details and channel, then advise whether careful cleaning or full replacement is appropriate.
Can you fit any seal of the same width?
No. Width is only one factor. The profile, depth, fire performance and smoke-control format also need to suit the door assembly, so we identify an appropriate replacement before fitting it.