TonyG

I have a follow-up question. As I mentioned the smoke seals on our individual apartment entrance doors have been rectified; this was on the side and top edges. The bottom edge of the doors incorporates a rebated drop-down door seal as the door-edge to cill gap is about 10mm. However when the door is closed the seal when dropped still leaves a gap of about 2.5mm. I appreciate this is less than the 3mm limit for a door-edge to cill gap where no smoke seal would be required, but I would have thought that where a smoke seal is fitted it ought to bridge the gap completely, especially as with the drop-down type there's no risk of interfering with door self-closure. ----------------------- Thanks for that Neil, much appreciated. I will request product installation data sheets from the building managers to clarify the required gap, although I would expect that for a frame fitted with an integrated intumescent strip and brush-type smoke seal anything greater than a 4mm leaf-to-frame gap would in any event render the smoke seal ineffective. The entrance doors to individual apartments in the building have intumescent strips but the smoke seals are separate and of a plastic blade type. Although the apartments are new I identified that my apartment door smoke seal was damaged, and that of a neighbour was not present; I looked at other apartments and found that several more were also defective. I got an initial response back that as the corridor fire doors had effective smoke seals (see my earlier post!) then that would prevent smoke from entering apartments (despite there being several apartment entrances between sets of fire doors. Eventually someone saw sense and new smoke seals were installed on the affected apartment doors.

Thanks for that Neil, much appreciated. I will request product installation data sheets from the building managers to clarify the required gap, although I would expect that for a frame fitted with an integrated intumescent strip and brush-type smoke seal anything greater than a 4mm leaf-to-frame gap would in any event render the smoke seal ineffective. The entrance doors to individual apartments in the building have intumescent strips but the smoke seals are separate and of a plastic blade type. Although the apartments are new I identified that my apartment door smoke seal was damaged, and that of a neighbour was not present; I looked at other apartments and found that several more were also defective. I got an initial response back that as the corridor fire doors had effective smoke seals (see my earlier post!) then that would prevent smoke from entering apartments (despite there being several apartment entrances between sets of fire doors. Eventually someone saw sense and new smoke seals were installed on the affected apartment doors.