Tag: Claddings

Virtual air barrier and dynamic buffer zone for a heritage building envelope

December 6, 2019

The restoration of claddings and exterior walls of heritage buildings is a growing activity in many Canadian towns and cities. However, to be acceptable for modern-day occupancies, these restored structures need to support an adequate indoor temperature, relative humidity (RH), air quality, and controlled building pressure.

Glass claddings for tall buildings

October 18, 2017

A dramatic increase in the demand for and construction of tall buildings in Toronto has resulted in the city producing the highest per capita number of residential towers in North America.

Living at the Edge: Large panels raise exterior moisture management concerns

September 19, 2014

The construction industry has witnessed an ongoing trend toward large-dimension material panels over the last 60 to 70 years. A pattern of 1.2 x 2.4-m (4 x 8-ft) sheets of oriented strandboard (OSB) and plywood have replaced 0.3 x 3- or 0.3 x 3.6-m (1 x 10- or 1 x 12-ft) shiplap board stock as the sheathing material of choice.

Glazing performance and sustainable design

May 23, 2014

Glazing is an integral part of modern design. From a thermal standpoint, glazing and its structure or frame is the weakest point of a wall assembly.¹ A double-glazed vinyl window with argon’s U-factor (i.e. thermal transmittance) is typically around 3 W/(m² K). This means the window will gain or lose around 3 W per m² per degree Celsius. An efficient fibreglass window system’s U-factor can be as low as 1 W/(m² K). An aluminum curtain wall system can range as high as 4 W/(m² K). On the other hand, the U-factor of a 152-mm (6-in.) steel stud, with batt and exterior continuous insulation, can be around 0.4 W/(m² K).

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