In Canada, the requirement for the 1/300 vent ratio first appeared in the 1953 National Building Code (NBC) and it did not make any distinction between structures with flat and sloped roofs.
A presentation on ‘Wind load implications for roofs and metal parapet flashings’ from an engineered point of view is being held on JAN 18, 2024, at BMO Centre London.
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.
Design professionals often work in isolation, with each discipline (architectural, structural, mechanical, and electrical) doing their own thing and only getting together after they have completed most of their individual design contribution to co-ordinate dimensions. Crucial data is unintentionally missed, and this can significantly affect the structural design of roof systems.
CSC Montréal is holding a webinar on “The impact of climate change: The design of low slope roofs” on Wednesday, March 17, from 8 to 9:15 a.m. via Zoom.
Roofs, and particularly flat ones, face unique issues when dealing with sudden downpours. Builders are discovering sprayed polyurethane foam (SPF) can contend with the ‘new normal’ extreme weather that is being witnessed.
An Ontario project received an honourable mention at the Asphalt Roofing Manufacturers Association’s (ARMA’s) annual Quality Asphalt Roofing Case-study (QARC) Awards. Al Anthony Roofing of Consecon, Ont., was recognized for its church roof installation at Closson Chase Winery in the neighbouring village of Hillier in Prince Edward County.
For commercial buildings, membrane roof systems can serve as part of an air barrier system. While this is common practice, questions still arise on how to design, specify, and install an effective air barrier system.
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