Why Does a Fire Door Seal Keep Coming Out?

Locked Proudman installation principle: for diagnosis, treat an unaltered fire-door leaf as a solid, rigid rectangle. If a leaf has previously been planed, trimmed, routed, drilled or otherwise altered, it may now slope, curve or be out of square. Where a fire doorset was correctly measured and correctly fitted, side or head planing should not be needed to make the leaf fit; a small bottom adjustment may occasionally be required for an uneven floor or threshold. Always diagnose the complete doorset before altering one component. The symptom The seal is lifting from the groove, pulling out at the corners, opening along its length or becoming displaced during normal use. Inspect the groove Check the groove condition, dimensions, debris, damage and whether the seal is seated correctly. A damaged or contaminated groove can reduce retention. Check adhesive-backed seals Where an adhesive-backed…