Asphalt shingles are one of the most common forms of residential roofing. Unfortunately, older asphalt shingles are also prone to damage from UV radiation. What exactly are the damaging effects of UV radiation on asphalt shingles and what can homeowners do to minimize the damage?
How Do UV Rays Damage Asphalt Shingles?
UV rays cause the asphalt’s surface layer to dry up. Over time, this can lead to cracking and warping. UV radiation does this by altering the shingle’s chemical makeup. The intense heat also causes the asphalt’s oil to evaporate, making the material brittle.
In addition, shingles are also more prone to thermal shock during summer. This is due to the constant flux between daytime’s heat and nighttime’s cooler temperatures. This leads to rapid expansion and contraction, causing the shingles to pull away. Continue Reading →