Preparing For Summer Heat With Roof Coating

19 March 2015
 Categories: , Blog


Spring is the perfect time to do roofing projects before the heat of summer makes your roof intolerable. Its also a good time to inspect your roof for any loose materials, such as asphalt tiles or aluminum flashing that may have been damaged by winter weather.

If the roof is sound, or after minor repairs are made, you may want to consider applying a reflective roof coating if you have a black roof. Reflective roof coatings are designed to reflect sunlight, unlike a traditional black coating, which absorbs heat from the sunlight. 

Reflective roof coating materials, which are mainly sold with a bright aluminum or white finish, will keep your home cooler while reducing your energy costs. A flat roof can be covered in just a few hours.

How to Apply Reflective Roof Coating

All you need to apply roof coating is the material itself and a small pushbroom with hard bristles. Of course, applying roof coating is a dirty job, so gloves would be a good idea. Wear clothes and shoes that may be thrown away after use, because it is easy to get the coating to stick to anything, but nearly impossible to remove it.

You will need to measure the surface area of your roof in square feet (length x width) to determine the amount of reflective coating that you will need. Check the back label on the cans of coating for surface area coverage. It is available in one or five gallon cans. While the larger cans are more economical than five individual gallon cans, you may not need five gallons, so buy only according to your need.

Before applying the coating, the roof will need to be swept thoroughly and cleaned with a garden hose if possible. This removes dirt and other contaminants from the roof to ensure proper adhesion of the coating. Coating can be applied if the roof is damp, but should not be applied if there is standing water. Use the push broom to sweep small amounts of water off the roof. Larger amounts of water may need to be removed with a wet shop vacuum.

Start applying the coating on the side of the roof farthest from your roof access area, to avoid walking through areas that have been coated. The finish of the coating may appear darker when wet, but it will lighten as it dries. It is highly reflective, so sunglasses and a brimmed hat will be useful, but you may not want to wear anything expensive. Roof coating finds a way to stick to everything within its reach. To learn more, visit Stetson Painting