Insulating solid masonry for heritage projects

Many buildings with solid or load-bearing masonry walls employ interior insulation retrofit strategies as heritage significance precludes work from the exterior. However, adding insulation on the interior side of these solid walls may result in accelerated masonry freeze-thaw deterioration in addition to embedded metal corrosion (of lateral ties and supporting angles/structure) or wood joist rot.

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Designing fabric duct ventilation

A decade ago, designing the esthetics of an exposed ventilation system in open architectural ceiling applications began with colour, material, and dispersion method selection. The suspension or top end of the ventilation system was the least esthetic concern—it was typically the last choice, or just an after-thought in the process.

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Benefits of fluid-applied air barriers and continuous insulation

The road to energy independence is paved with conservation. In spite of new methods of producing ‘clean’ energy, nothing beats conservation as the most cost-effective solution. This is why recent changes to building codes—such as the new National Energy Code of Canada for Buildings (NECB)—have emphasized the requirements for airtight building envelopes and continuous insulation (ci).

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Specifying formaldehyde-absorbing wallboard

Last spring, several members of Group2 Architecture Interior Design, revisited their plans for an office space in Edmonton after hearing a wallboard that absorbs one of the highest concentrations of volatile organic compounds (VOCs)—formaldehyde. The firm’s new lease was for a 478-m2 (5150-sf) top floor plate in a nine-storey building. They were to completely remodel the space, adding new framework and drywall, among other things.

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Understanding ULC-listed fire-resistant designs

As a regulatory representative of Underwriters Laboratories of Canada (ULC), this author sees an increasing number of building designers submitting plans to approving authorities with fire-resistant-rated assemblies as being “based on Design No. XXXX” instead of using the actual listed one. However, a design submitted as being “based on” is not the design “listed” by ULC.

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