As we enter the early weeks of spring, there can be many instances in which ambient temperatures rise more than 30 – 40 degrees in the course of a few hours due to changing seasonal factors and warmer rays from the sun. These dramatic temperature changes can be very stressful to roof systems, including membrane and metal roofs, causing leaks to occur as the roof expands and contracts.
Aging metal and older membrane roofs are particularly susceptible to the dynamics of thermal shock or thermal cycling. In the case of metal roofs, thermal shock causes movement of the metal panel, opening up seams over time. In addition, the neoprene fastener washers may simply disintegrate as they age; also creating leaks at key penetration points. It is very common for facility managers and building contractors to report increases in roof leaks in early spring months.
Elastomeric coatings can effectively remedy roof systems damaged by thermal shock
Elastomeric roof coatings have proven to be effective remedies to the issues of thermal shock and leaks created by roof expansion and contraction. Their elasticity is an inherent benefit, and the long-term performance of these coatings has been verified by several third-party experts including FM Global, ASTM, CRRC, and ENERGY STAR®. Additional benefit is provided by the application of reflective “cool roof” coatings. These coatings have demonstrated their ability to reduce peak roof surface temperatures from a range of 160 -180° to a range of 90 – 100°, a reduction of more than 40% in heat and a marked reduction in the stress on the roof system. For more information on the benefits of reflective cool roof coatings visit ENERGY.GOV COOL ROOFS .
Warmer days and nights are right around the corner and better conditions for major roof restoration projects and the many outdoor activities that many of us love so much. For more information on the issues of thermal shock, roof coatings and other restoration solutions, please visit www.aldoproducts.com, contact [email protected], or call 800.474.6019.
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