There is increasing interest in the garden roof system as a sustainable building design option in North America today. This Update reports the results of a field study to evaluate the thermal performance of this technology, as well as its potential to retain storm water runoff. 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, 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
Thermoplastic polyolefins are a “new generation” of single-ply roofing systems. This Update reviews their characteristics and performance to date and clarifies some misunderstandings related to terminology. Full story
Blistering is a common problem with field-applied built-up roofing systems. This Update explains what blistering is, describes the causes and recommends ways of dealing with it. Full story
