Why Is a Fire Door Rubbing on the Latch Side?

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 closing edge contacts the latch jamb, the door becomes tight near the lock area, or the leaf leaves a visible rubbing mark. The door may still close, may stop short, or may bounce back. Check exactly where the rub occurs Is the contact near the top, middle, keep or bottom? A local…