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I am currently in the process of building a dormer extension and wondered if anyone has opinons on the best insulation?
Kingspan,celotex,rocksilk?
The working drawing mentions celotex but also says or other equal and approved insulation method.
I would just like to make sure my money is spent wisely
Kingspan,celotex,rocksilk?
The working drawing mentions celotex but also says or other equal and approved insulation method.
I would just like to make sure my money is spent wisely