While energy-efficient buildings are created by insulating from the bottom up, getting the best possible insulation for the project starts by understanding the material from the inside out. Current tests highlight the moisture absorption...
Tag: Division 07
With a host of recent industry issues, including the tightening of labour markets, problems associated with moisture intrusion into wall cavities, heightened awareness of mould-related health problems, and a need for increased productivity at...
Energy and thermal performance requirements are growing and playing an increasingly significant role in building codes throughout North America. However, understanding and meeting these requirements has also become complex for designers. At the same...
Accurate assessment of the watertightness of new and existing roofs can potentially save building owners hundreds of millions of dollars annually. The challenge for roofing specifiers is choosing the most effective exterior-to-interior watertightness evaluation...
The challenges of winter roofing
(01/22/2019)
Even in winter, immediate replacement of roof systems could be an absolute necessity, depending on the severity of leaks and the interior environment the roof is supposed to protect. Contingent on the size of...
Thermal breaks prevent heat loss
(12/27/2018)
Structural thermal breaks (STBs) address thermal weaknesses in the building envelope by ensuring continuous insulation (ci), thereby improving the overall thermal performance. They are also changing the design philosophy to an “envelope-first approach.”
Influence of gaps on roof insulation performance
(09/20/2018)
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.
When selecting air barrier products to employ in building designs, architects have a broad range of choices. Spray foam insulation products are often selected because they can provide superior performance and also contribute to...
The trend towards higher performing buildings and envelope systems requires a re-doubling of effort towards achieving durable, constructible, and maintainable transition details. There are many ways for these details to fail. Fortunately, there are...
Restoration of a heritage brick clock tower
(07/12/2018)
During the restoration of a clock tower in Huntsville, Ont., the contractor uncovered significant deterioration within the multi-wythe clay brick exterior walls. The project was expanded to include: demolition of the deteriorated brick walls,...
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May 2025