New Report Rejects Condensation Risk of In-Situ PUR / PIR Insulation in Hybrid Roofs; Praises Benefits
The British Urethane Foam Contractors Association (BUFCA) represents contractors who spray polyurethane foam insulation on the underside of the covering (slates or tiles) of pitched roofs. Besides stabilising the roof covering, the polyurethane foam, in combination with mineral wool laid on the ceiling, provides a high level of insulation to the roof. Concerns have been raised that, because the mineral wool is limiting heat from entering the loft, the lower surface of the polyurethane foam may be cold enough to promote condensation.
This report describes the background to the methods used to assess the risk of condensation in pitched roofs, the choice of appropriate boundary conditions and discusses the implications for the chance of problems occurring when sprayed polyurethane insulation is used in conjunction with mineral wool.
Click here to Download the Report
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