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insulation

jonny102 · 2021-11-24 19:42:25

would 150mm of rockwool be sufficient to achieve a u value of 1.6 in a sloping lean to roof if not what would

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24-11-2021 8:42pm

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jonny102

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Join Date: November 2021

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would 150mm of rockwool be sufficient to achieve a u value of 1.6 in a sloping lean to roof if not what would

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#2 24-11-2021 11:37pm
Biker1

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Rockwool is just a brand name. Lets say 150mm of mineral wool insulation with a thermal conductivity of 0.044w/mk between rafters at 400 c/c would give a u-value of 0.32w/m2k. To achieve a u-value of 0.16w/m2k you would need to add an 82.5mm insulated slab.

2