I have been quoted €10,000 incl. VAT to insulate 54 sq.mts of a flat roof with Rockwool! Supplier proposes to strip the old felt and chipboard, install new joists, install 150mm rock wool, sheet the joists with 18mm water proof plywood, put an underlay and finish with a felt top. He will also replace old fascia and soffit, gutters (26x17 ft) and a downpipe. Personally, this sounds like a lot of money for Rockwool. I don't even think it meets building regulation standards. Has anyone put rockwool insulation in their flat roof? Does the house feel warmer and are you happy with it? Would appreciate your comments, suggestions and recommendations on what is the best insulation and method for flat roofs, and what I should expect to pay for 54 sq mts.
of insulation. Many thanks ....
of insulation. Many thanks ....
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