Advice Needed on Insultating Cold Roof Flat Roof
Information, help and advice on maintaining, installing and repairing a flat roof. Post your questions and view answers here

Leaky Roof
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Advice Needed on Insultating Cold Roof Flat Roof

by Leaky Roof » Mon Aug 15, 2016 2:54 pm

I have a flat roof cold roof.

Celotex PL4000 insulation board (60mm insulation 12mm plasterboard ceiling > roof joists (12" tapering void) vented via facia front and back for cross breeze > 18mm water bonded plywood > two layers of roofing felt.

The room obviously refusing to hold any heat. What would be the easiest, most cost effective way of insulating the roof space?

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