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That’s where I’ve got that from then! cheers mate

... is that a no then, 180?

HI ROOF IS NOW BATTENED AND HAS BREATHABLE FELT AND BEAUTIFUL NEW NAILS FOR ME NEVER TO SEE. Kept the Original slate as nothing wrong with it. And two velux. now... To comply with building regs further what depth kingspan do I need? Total of 270mm? - for between rafters - for dwarf wall...

Haha cheers that was my original query. as for the foils I’ve had a good look around even amazon sell them haha no chance I’d get something like that off there would stick to a proper brand.

Cheers mate. So superfoil (still not sure which) with any gaps taped, with a 25mm air gap between that and the slate, then celotex/kingsman boards then plasterboard (or insulated plasterboard) .. will this stop any condensation? I don’t want to mask any leaks etc just don’t want any...

Looks like it’s now going down that route.. Having a stair case Now too. And will adhere to building regs with regards to the insulation, still want to do the majority myself to save the pennies. Waiting back for a couple of quotes still. - for building regs do I need felt under the slate? -...

Thanks for that I’ll have a look. I’m now having a professional coming in to reinforce floor, I believe they’re ‘strapping’ the joists with new joists for reinforcement. And fitting a velux. I am just trying to find out as much as I can with regards to the insulation for the roof. Concerned...

Thanks for all the replies. So change of plan. I’m Working from home more now so turning it into a bit of an office... plugs Lights plasterboard and plastering etc .. So I can use superfoils? I believe they’re rather new to the industry? I can put those in between the rafters, below the slate...

Thank you... so I’m presuming as long as I leave 50mm between the tiles and the board for air, I won’t get damp caused by condensation? Cheers. Andy

Hi I am looking to create a warm storage space in my loft. House dates to 1900 Original slate roof I want to insulate the rafters and eventually add plasterboard etc. There is no felt beneath the slate roof. I have not noticed any leaks up there. Can I add the insulation boards into the...