Air leakage in roofing assemblies can ultimately result in catastrophic roof failures affecting the building, its contents, and inhabitants. Therefore, it is paramount to pay attention and become familiar with all the environmental factors affecting the built environment.
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The growing demand for energy-efficient and sustainable building solutions drives building engineers and architects to search for innovative and cost-effective ways to optimize insulation. One such cutting-edge insulation technology is hydrofluoroolefins-blown (HFO-blown) spray foam insulation, a high-performing, eco-friendly alternative to traditional insulating materials such as fibreglass or mineral wool.
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A strong air barrier is fundamental to the ecosystem of high-performing, durable, and passive buildings of tomorrow. As one looks to the future, building transformation would not be complete without an air barrier system (ABS) and its control layers contributing to a winning formula that is designed, designated, and detailed to control water, vapour, and air.
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Air leakage and air exchange are two of the biggest issues facing architects, designers, and facility managers when it comes to specifying commercial rolling doors for conditioned warehouse spaces across the country. To improve energy efficiency and save time and money as well as meet increasingly stringent environmental laws and regulations, industry professionals are turning to high-performance doors.
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Water is the most significant factor in the premature deterioration of our buildings. Excessive moisture accumulation on porous materials can lead to water penetration, freeze-thaw damage, efflorescence, cracking, and façade soiling.
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Reducing the operational energy use and increasing durability should be the prime concerns of architects who wish to design and build ‘green’ buildings,” wrote John Straube, PhD, P.Eng., principal at RDH Building Science and RDH Building Science Labs.
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Air barriers have been a requirement of the National Building Code of Canada (NBC) for many years, but not all design professionals fully understand what is involved in specifying one. An air barrier may be a material of many functions and the choice of one over another should reflect the needs of the particular project. Historically, the requirements for airtightness have been found under NBC Part 5, “Environmental Separation.”
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