Originally Posted by
a.k.a
I- in my area the thin foils are not approved at all, but they accept 100mm of kingspan between the trusses
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exactly. I heard from a good source that Kingspan and Xtratherm ETC got together and tested the superquilt etc loads as they were in fear of the market being cornered and them losing mass trade. they did it and it doesnt give the supposed equivilent to 300mm rockwool as it states!
We found this out after buying the twatting stuff
