Anyone got any advice on fitting B. Gypsum Fireliner board onto internal steelwork? I need 1hr protection on an interior standard (veritcal 150mm PFC) and beam (horizontal 178mm UB/RSJ) so I'm looking at 15mm.
The architect has specified Gyplyner system to do this which looks like it will work just fine though I have two concerns. The first is cost, obviously.
The second is that the PFC standard is bolted to a 100mm single brick wall so it already protrudes by 25mm each side, add another 15mm each side for the fireproof board and that's 40mm (plus) I need to make up on each side to make the wall flish with the fireboard. The Gyplyner system looks like it will impose yet another standoff that I'd rather avoid.
I can't find out from the White Book if a gap between board and steelwork is required to achieve fireproofing. If not, can I just glue the board to the steelwork where I have a flat surface and what adhesive would folks recommend?
For normal plasterboarding I'd use wooden dwangs* hamered into the channel and face of the beam for the open sections, but that seems a bit useless for fireproofing as the baord may not protect the dwangs so the baord would just fall off anyway.
Anyway, this is a longer post than I inteneded so, please, any comments on this sort of thing greatly appreciatted.
- is 'dwang' a Scottish term, it sounds like it might be? I take it to mean a bit of wood fastned into brickwork or steelwork that you can later fasten other timber (or plasterboard fittings) to.