Dallas Roofing: Article About Protecting Roofs From Extreme Heat
Dallas roofing experts agree that regional heat, followed by cooler rains can shorten the lifespan of any roof. Homeowners who live in regions with extreme heat need to take special measures to ensure that their roofs are well maintained.
Thermal shock is a condition in which the heat from an unrelenting sun is absorbed into a roof and then cool showers suddenly cool it off. Thermal shock is a problem because heat causes the roofing system to expand and cold causes the roofing system to contract. When this happens in rapid succession, as is the case with thermal shock, it can damage the roofing system. Thermal shock can create cracking and separating of joints and seams. The constant expansion and compression can also cause flashing to come loose.
One way to protect a roof from thermal shock is by applying a roof coating. A roof coating is an adhesive fluid that is applied to the roof and dries into an elastic membrane. This fluid can have the same thickness of paint, or may be over ten times thicker than paint. The membrane is able to expand and contract with the roof to prevent cracking. Roofing coats can also reflect the UV rays that can be so damaging to a roof.
Reflective vapor barriers can also help keep the attic cool.
The roofing experts at Total Roofing of Dallas can assist you with any questions regarding gutters or emergency repairs.
Attics that are excessively hot can cause rafters to crack, warp or buckle. The vapor barrier also helps prevent moisture that can turn into mold.
Roofing materials, themselves, can also help reduce thermal shock. Replacing traditional asphalt shingles with tile or PVC can prevent some of the radiant heat absorption. Clay roofing tiles can have up to a 70 percent cooling effect on a home. PVC is a highly reflective, thermoplastic membrane that is low wicking, absorbing and transferring very little water.
Just like homeowners who live in colder regions, homeowners who live in regions that have extreme temperatures should also inspect their roofs regularly before and after the severe weather season. However, unlike northern homeowners who have to check their roofs before and after the winter snowfall; southern homeowners need to check their roofs before and after the summer heat.
Small indications of cracking or warping at the beginning of the summer can turn into huge problems once the repeated cycle of thermal shock sets in. It's important to address any issues immediately before this occurs. After the summer is over, homeowners need to check their roofs again to see if thermal shock has stressed the roof in any way.