What Is Sunlight Degradation?

Both residential and commercial roofs can be damaged by the sun. Over time, roofing materials are degraded by ultraviolet (UV) radiation from the sun. The sun’s ultraviolet radiation causes roofing materials to begin to deteriorate as the chemicals in modified bitumen (shingle, metal, and single-ply membranes) are exposed to the sun’s UV radiation. Every roof system’s performance is affected by the sun.

The sun’s effects

Sunscreen is not recommended for roofs. Roofs are subject to heat and expand when exposed to the sun. As they cool, they contract. This cycle can cause long-term, slow-acting damage to roofing materials. You should be able to recognize the strengths and weaknesses of different roofing materials. By choosing the right roofing system, you can avoid having to replace your roof sooner than is necessary.

You may also sustain other damage from the sun to your roof:

  • Blisters –  Bubble, hot, and expanding air
  • Bleaching –Coloration of roofing material due to long-term sun exposure
  • Warping A structural problem with your roof that requires immediate attention
  • Cracks – Caused by heat and sun, roof leaks can occur if they are not addressed properly

Black roofs and the effects of the sun

Black roofing materials are more likely to absorb the sun’s heat and heat up quicker. They also tend to stay hotter for longer periods of time. This can reduce the life expectancy of roofing materials and may lead to other damage such as cracking and blistering. A darker roof can also lead to higher energy costs for your building, particularly if it is not properly insulated.

A Cool Roof reduces sunlight degradation

Cool roofs are usually white or light-colored and designed to reflect more sunlight and absorb less heat. Cool roofs are more resistant to sun damage than dark roofing materials. This is especially true in Florida’s intense sunlight. Cool roofing materials can also reduce energy costs as they absorb less sunlight. They are naturally cooler. Cool roofs, which are white in color, have been proven to be beneficial over the long term. They help to reduce sunlight degradation and lower cooling costs for buildings in hotter areas where air conditioners are used all year.

What is double reflectivity?

White roofing materials are not always the best choice. A white roof surface can reflect sunlight onto reflective surfaces such as glass, high walls, or other reflective surfaces. This is called double reflectivity. The sun will reflect twice as much energy onto these surfaces. Your roof could become hotter, which can cause your roofing materials to begin to fall apart faster.

Plan for your new roof

It is crucial to find a roofing contractor that understands the sun’s effects on roofing materials. When planning your roofing project, it is important to consider the type of building, climate, and options for your roof. This post was written by a roofing professional at KCG Roofing. KCG Roofing is a premier roofing contractor that does Englewood roofing! KCG Roofing has the experience and expertise to replace or repair your roof with quality materials and excellent craftsmanship. All our roofs are backed by a 15-year leak-free guarantee, the highest in the industry. We have been family-owned and operated for over 40 years.