Basically we have a single skin brick utility room adjacent to kitchen ( 2 walls brick to waist height, one wall brick to full height) and then polycarbonate roof over the top. It's off the kitchen and houses the tumble dryer and washing machine. We're having the kitchen all re-done and to match the same units out there that is also all getting re-done.
Due to the constraints of fitting units in I have opted for following the advice another person suggested which I will be thinking about doing this on the two waist height walls:
'fit 25mm x 50mm treated battens to the wall, 25mm polystyrene insulation between. Plastic membrane, tape any joints then screw 12.5 plaster board. Leave a gap along the bottom.'
and on the floor to ceiling height wall will be opting for similar but with 50mm insulation. This wall has the oil filled radiator stood against it. This is all to be fitted above the DPC and then I'll just use some kind of skirting or something to finish off along the bottom to hide the gap from the above finishing and the floor.
I was planning on using DPM behind all the battens.
My questions are:
1) should I be using a breather membrane over the entire wall before the battens are fitted?
2) they said polystyrene insulation - could I use 25mm celotex/50mm celotex PIR board? .
Having also been doing some more research I've found this:
http://www.insulation-online.co.uk/celotex-pl4000-insulated-plasterboard-previously-pl3000.html
could I just use this attached straight to the single skin wall with no battens and be done with it? I can't seem to find anything about if that has an inbuilt vapour barrier and/or can be used on a single skin wall?
any advice would be welcome. We're intending to do one or the other options in the next couple of weeks.
Thanks
Due to the constraints of fitting units in I have opted for following the advice another person suggested which I will be thinking about doing this on the two waist height walls:
'fit 25mm x 50mm treated battens to the wall, 25mm polystyrene insulation between. Plastic membrane, tape any joints then screw 12.5 plaster board. Leave a gap along the bottom.'
and on the floor to ceiling height wall will be opting for similar but with 50mm insulation. This wall has the oil filled radiator stood against it. This is all to be fitted above the DPC and then I'll just use some kind of skirting or something to finish off along the bottom to hide the gap from the above finishing and the floor.
I was planning on using DPM behind all the battens.
My questions are:
1) should I be using a breather membrane over the entire wall before the battens are fitted?
2) they said polystyrene insulation - could I use 25mm celotex/50mm celotex PIR board? .
Having also been doing some more research I've found this:
http://www.insulation-online.co.uk/celotex-pl4000-insulated-plasterboard-previously-pl3000.html
could I just use this attached straight to the single skin wall with no battens and be done with it? I can't seem to find anything about if that has an inbuilt vapour barrier and/or can be used on a single skin wall?
any advice would be welcome. We're intending to do one or the other options in the next couple of weeks.
Thanks