In the last two decades, the improved technologies of silicone, acrylic, and polyurethane have become better integrated into basic roofing practice, not only expanding the range of roofing applications but also competing successfully against the traditional asphalt coatings used for maintaining traditional built-up (BUR) roofs. Today, most manufacturers of entire roof assemblies also have a coatings line, including at least two of these four technologies.
The Sprayfoam Show 2018 Convention and Expo, organized by the Spray Polyurethane Foam Alliance (SPFA), will be held from January 29 to February 1 at Arthur R Outlaw Convention Center in Mobile, Alabama. One of the nation’s largest events dedicated to sprayed polyurethane foam (SPF) is open to manufacturers, contractors, architects, and equipment providers.
Designers have long used cross-ventilation to minimize the potential for moisture accumulation and condensation in attics and crawl spaces. However, unvented attics have become popular in both residential and commercial applications, pushed by emerging claims of energy savings and moisture control.
Designers have long used cross-ventilation to minimize the potential for moisture accumulation and condensation in attics and crawl spaces. However, unvented attics have become popular in both residential and commercial applications, pushed by emerging claims of energy savings and moisture control. While these ‘new-style’ attics can be successfully used in many circumstances, this author believes there are reasons to employ vented assemblies in many situations.
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