Quizzes & Puzzles1 min ago
Thinner Loft insulation
2 Answers
I want to update my loft insulation but all of the quotes I've had are for 10 -12cm thick fabric.
I want to keep the loft for storage and am told that it's not a good idea to squash to insulation with boards as it reduces the efficiency.
Is there an alternative that would sit within the depth of the rafters and be efficient?
I have seen insulation with what looks like a foil backing and wondered if anyone has experience of it and could recommend it or something else.
I want to keep the loft for storage and am told that it's not a good idea to squash to insulation with boards as it reduces the efficiency.
Is there an alternative that would sit within the depth of the rafters and be efficient?
I have seen insulation with what looks like a foil backing and wondered if anyone has experience of it and could recommend it or something else.
Answers
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For more on marking an answer as the "Best Answer", please visit our FAQ.You could use polyurethane rigid board. Kingspean and Celotex were the market leaders in these products but there are a number of others around. They are backed each side with silver foil and maybe are what you have seen. They are approximately twice as efficient as fibreglass roll in U-value (thermal insulation measure) so an 80mm thickness to fit between your roof truss horizontal would be equivalent to 160mm of fibreglass.
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