To minimize the loss of thermal resistance in design, the R-value of roof insulation should be computed based on the actual performance of the insulation material and the local climate, says the National Roofing Contractors Association.
The long-term thermal resistance method of determination may generate an R-value required by the building code, but it does not take into account thermal resistance loss when metal fasteners are employed, according to a study.
Click here to learn more. +
Related Stories
Codes and Standards | Jun 1, 2020
How owners should comply with OSHA roofing safety guidelines
Buildings should have fall protection and restraint provisions for those who go on roofs.
Codes and Standards | May 29, 2020
AIA releases new, updated sustainable project documents
Streamlined sustainable design and construction process included.
Codes and Standards | May 28, 2020
USGBC outlines how it will support pandemic recovery efforts
Includes emergency guidance and upgrades to the LEED green building program.
Codes and Standards | May 27, 2020
Office market could be COVID-19 casualty
As companies get used to work at home, post-pandemic office market could collapse.
Codes and Standards | May 26, 2020
Architectural Reuse Council will step up efforts to reuse construction waste
Cabinets, appliances, lighting, and lumber diverted from landfills to be repurposed.
Codes and Standards | May 26, 2020
Is CLT really a green solution?
Sustainability depends upon forest stewardship, product manufacturing process.
Codes and Standards | May 20, 2020
St. Louis is first Midwest city to pass building energy performance standard
Allows owners broad flexibility on how to achieve goals.
Codes and Standards | May 20, 2020
Supreme Court says Georgia cannot copyright its entire official code
Ruling may have implications for other states claiming copyright for building codes.
Codes and Standards | May 18, 2020
Strategies to reduce personal contact in multifamily properties
Design can improve health amid COVID-19 pandemic.
Codes and Standards | May 18, 2020
Canada Green Building Council says building industry lacks zero-carbon skills, knowledge
Net-zero target requires shift in thinking and practices.