Thermal performance of closed-cell foam insulation board under different temperature conditions

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In recent years concerns have been raised by the stakeholders of Canadian Roofing Industry about the true fieldperformance (thermal resistance) of closed-cell foam insulation in Canadian climates with extreme temperatureconditions and variations. Studies have already indicated that thermal resistance of closed-cell foam insulationwith captive blowing agent/s is a non-linear function of temperature, unlike other traditional thermalinsulations such as glass fiber, mineral wool etc. This unusual thermal characteristic of closed-cell foaminsulation results in over estimation of energy performance of building envelopes. In this scenario, roofingindustry is looking forward to receive credible technical guidance, based on comprehensive research outputs,for realistic thermal resistance value of closed-cell foam insulation board that reflects the field boundarytemperature conditions and type of constructions. The proposed research project aims to address this issuethrough further laboratory, analytical and numerical studies and reaffirm the credibility of current roofingdesign and construction practices in Canada.