Hi
After some advice on sensibly priced insulation for a warm deck flat roof conversion.
Background. My 58m2 flat roof needs redoing. Lots of cracking, holes through most of the layers, some lifting deck boards etc. Found out that under current building regs i need to improve my insulation. Threshold is 0.35U (iirc) and my current insulation gets 0.54U. So i now need to improve to 0.18U.
The current flat roof design is cold deck. There isn't enough space in the void for more insulation and an air gap. The joists are 125mm. So i'm looking into a warm deck conversion.
So now i'm trying to find an insulation that gets the required U value without costing the earth. Looking through celotex, kingspan, Recticel, ecotherm.
My roofer normally uses Celotex, and initially suggested td4126, but at a cost of 2600+vat. He has now found Recticel eurothane plylok 126mm at 2180+vat, so a little better. I've just found Ecotherm ecometer 120mm which is looking to cost at about 1100 for the insulation material, so plus fixings and labour to install. But again, cheaper.
Anyone got anything else they know of to offer?
Cheers
After some advice on sensibly priced insulation for a warm deck flat roof conversion.
Background. My 58m2 flat roof needs redoing. Lots of cracking, holes through most of the layers, some lifting deck boards etc. Found out that under current building regs i need to improve my insulation. Threshold is 0.35U (iirc) and my current insulation gets 0.54U. So i now need to improve to 0.18U.
The current flat roof design is cold deck. There isn't enough space in the void for more insulation and an air gap. The joists are 125mm. So i'm looking into a warm deck conversion.
So now i'm trying to find an insulation that gets the required U value without costing the earth. Looking through celotex, kingspan, Recticel, ecotherm.
My roofer normally uses Celotex, and initially suggested td4126, but at a cost of 2600+vat. He has now found Recticel eurothane plylok 126mm at 2180+vat, so a little better. I've just found Ecotherm ecometer 120mm which is looking to cost at about 1100 for the insulation material, so plus fixings and labour to install. But again, cheaper.
Anyone got anything else they know of to offer?
Cheers