Insulating glass units that employ metal spacer bars are more susceptible to heat loss and condensation, both of which are detrimental to window performance. This Update reports results of research conducted on state-of-the-art spacer bars that can help improve performance. Full story
Single-ply roofs (SPRs) behave differently than built-up roofs and a simple test method is needed to ensure that they perform well under dynamic wind conditions. This Update describes a new test protocol developed by an industry-supported consortium project led by NRC’s Institute for Research in Construction. Full story
This Update provides guidance on the use of low-permeance materials towards the outside of walls, for the range of climatic conditions found throughout Canada. By following these recommendations, which are reflected in the 1995 National Building Code, one should reduce the potential for the condensation of moisture in walls. Full story
This Update explains the purpose and characteristics of the air barrier system in the building envelope as defined by the National Building Code of Canada. It discusses the code requirements for these systems and explains the role of the Canadian Construction Material Centre’s evaluation criteria in determining whether a system meets these requirements. Full story
Archived Content Information identified as archived is provided for reference, research or recordkeeping purposes. It is not subject to the Government of Canada Web Standards and has not been altered or updated since it was archived. Please contact us to … Full story
This Update describes the nature and causes of traffic-induced vibrations in buildings, and discusses possible remedial and preventive measures. The focus is on houses. Full story
This Update, based on an IRC study, describes causes of blistering in styrene-butadiene-styrene (SBS) modified bituminous roofs, suggests ways to prevent it and recommends methods to deal with it. Full story
This Update reviews the use of spray-polyurethane-foam insulation in buildings and discusses how their characteristics influence their field performance. Full story
Basement problems are a frequent source of claims made under new home warranty programs. This Update presents the results of an IRC/industry research project on the performance of insulation systems applied to the exterior of basement walls. Full story
This CTU discusses the application of the rainscreen principle to the design of exterior walls, building on the concepts presented in Construction Technology Updates No. 9 and No. 17.</a Full story
