Tech Tips
See our complete list of Tech Tips here…
“Peak electrical demand in the Summer occurs around 2 PM when the demand for air conditioning is the greatest. Utilities are investigating charging higher rates during these peak hours.
Consider using white Elastek roof coatings to reduce solar heat infiltration through the roof and reduce your air conditioning costs.”“Growing interest in higher reflectivity values and limitations on the application of aluminized asphaltic coatings to roof surfaces other than existing asphalt and modified bitumen have dramatically reshaped the marketplace.”
“Estimates of long-term energy savings attributable to white reflective coated surfaces should be based on reflectance values of that are approximately 75 – 80% of initial reflectance values.”
“Cool roofs can in fact be as much as 100º cooler than roofs covered with traditional dark-colored roofing materials.”
- EPA“The durability of white roof coatings was dramatically improved with the introduction of products based on elastomeric acrylic resins.”
- Cynthia Challenger, JCT Coatings Tech“According to figures supplied by an independent market-research firm, traditional dark-color built-up roofing (BUR) declined an estimated 20% in 2006 from the year before. Modified bitumen roof sales dipped 8%.”
“Asphalt and modified bitumen used to be 90% of the roof market; now they are way down, perhaps as low as 50%.”
“In 2006, TPO accounted for an estimated 19% of new roof installation…behind the market-leading EPDM… SBS modified-bitumen at 14%, BUR at 1%, metal at 1%, PVC at 9%, APP at 5%, and spray polyurethane foam (SPF) at 3%.”
“If you already have two roofs on the building, it has to be torn off. That means the most cost-effective option is to keep the roof in place and apply a coating.”
“Coatings shouldn’t be seen as being the primary waterproofing substrate, but are designed to make the original single-ply substrate last longer. They can extend the life of the substrate and keep it white and reflective.”
