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Routine Inspections and Hardware Care Needs
Checking the Frame Perimeter
Gaskets degrade over time. When tenants or maintenance staff slam a metal hatch shut after checking water stopcocks, the expanding seal inside the rebate can get pinched or torn away entirely. When managing fire rated access panels in Hertford residential blocks, we notice unpainted mastic borders that crack as central heating dries out the plasterboard around the aperture. Look closely at the intumescent strip along the inner edge. Dust builds up on the bottom flange. If the seal pulls away from the steel lip, heat finds a direct pathway straight through the ceiling void.
Latch and Keyway Upkeep
Locks must never stick. People often force square-drive keys into budget cam mechanisms, twisting the internal tongue until the door no longer pulls flush against the structural frame. A sagging panel lets smoke seep past the leaf before the graphite core even begins to expand under hot gases. We regularly find service hatches propped open with wooden wedges because someone lost the triangular budget key during plumbing repairs. Keep spare keys hung inside the electrical riser cupboard. Apply dry graphite spray to the pivot pins, avoiding wet greases that collect greasy corridor dust.
