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...

Without a properly engineered ventilation system on the roof, ice-damming can threaten a building’s health. An ice dam is a ridge of ice forming at the eaves of a roof, cricket, or valley that...