insulation pitched roof kingspan celotex

I'd like to add additional insulation to a vaulted ceiling with exposed rafters by adding 70mm foil backed celotex between the rafters and plasterboarding over. My concern is that there is an existing VCL (polythene sheet) that I'd be insulating underneath. The existing roof consists of 80mm...

New single storey side extension (wc/ utility & office) with tiled pitched roof (inc breathable membrane/felt) with rafters & ceiling joists So small void /storage area potentially all be it small, and insulation is priority Double skin (Con. blocks, cavity insulation , Fenlite Con blocks,)...

Hello! My architect has specified Kingspan TW55 and TP10 for my loft conversion. Questions is, is there a cheaper alternative and if so, will building regs care about if Architect has specified one brand and I install another?

Hello! I'm renovating the bedroom in our late 19th century end of terrace and the original lime plaster is in poor shape. I may need to bring it all down and start from scratch and although this would be a pain it would allow me to internally insulate the pitched part of the ceilings as well as...

Hi All, Bit of a lurker but thought this would be the best place to ask the questions. Our old (1865) house has a loft room that has always been a room ( i suspect it was servant quarters once). The room now has stairs direct into the room. The room itself has a pitched apex roof with 5ft dwarf...

I'm after some advice, I have a job that I need to fix plasterboard over PIR insulation boards.....can i stick plasterboard directly onto the surface of the PIR insulation (celotex) board? I then have another instance that the board needs to stand off insulation 10 / 20mm but on a taper as the...

Hi, i bought 10 sheets of celotex a couple of months ago at 100mm as that would is what had been written on the plans... However i think should have been 90mm as i now have 10mm celotex proud of face of studding and between rafters. Plan was to add another 25mm insulation and plasterboard...

Hi there If I'm renovating an old property where the beams are to be exposed, what is the procedure regarding insulation? To meet building regulations what depth of insulation is required? I can only find regs for a pitched roof/ceiling where the rafters are going to be plastered over...

Hi, Bought a house (victorian semi) with two loft/attic rooms. One was already converted, the other bare brick and pitched roof. The rafters are about 70mm deep, with black bitumen-type felt which looks to be in fairly good condition. The previous owner had started putting in 80mm foil...