Experiments conducted by RDH Building Science, National Research Council Canada (NRC), and a manufacturer of insulation materials have confirmed the presence of gaps between boards of insulation will cause a reduction in its R-value.
Climate change is already having an effect on communities across Canada. Some are facing increased droughts; others, more intense storms. Weather-related emergencies like heat waves, flooding, and forest fires are on the rise.
The Polyisocyanurate Insulation Manufacturers Association (PIMA) developed a research report in response to recent articles questioning the thermal performance of polyiso roof insulation in colder climates. According to “Thermal Resistance and Mean Temperature: A...
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