Ask The Expert

Q: I need Dew Point Calculations for a roof with 270mm mineral glass fibre insulation above and between roof joists

A: Please download the PDF files linked below to see Paul Burrows' calculations for the condensation analysis.

Knauf Insulation's technical department has assumed the area to be London with a humidity class 3 being domestic property (3 – dwellings with low occupancy typical). The calculation only covers the use of Knauf Insulation Earthwool Loft Roll 44.

Download PDF: Ceiling Space
Download PDF: Ceiling - Condensation Analysis

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