Your roofing contractor can help you choose from several different types of coatings used on metal roofs for varying reasons, but one of the most important is to help reflect heat. Choosing the right coating for your metal roof is important to ensure the longevity of the roof and to make it as energy-efficient as possible.

Why Roofers Use Ceramic Coating

Applying a ceramic coating on a metal roof will help to deflect heat. This is extremely important in almost any climate, but particularly in areas with a lot of warm, sunny weather. The temperature of a metal roof exposed to bright sunlight can reach over 150°F. A roof that hot will make a building without air conditioning unbearably warm and can result in extremely high utility bills in an air-conditioned home or business. Although color selection is limited, ceramic coating can typically reflect 75% to 85% of the solar radiation that a roof is exposed to.

Why Roofers Use Solar Reflective Coatings

Developed through Nanotechnology, solar reflective coatings are not only effective for reducing the amount of solar radiation on a roof, but they actually work better the hotter it gets. This greatly enhances the energy efficiency of a metal roof. Changes in temperature can cause metal to expand and contract, which can put quite a lot of stress on the joints and bolts in the roof. Solar reflective coatings can reduce the temperature variations, which can help the roof last longer and avoid needing roof repair.

Read more about metal roof basics

Image: Hundred House roof lines / Groton School / CC BY 2.0