Sunburnt Roofs: The Hidden Costs of Extreme Heatwaves

Sunburnt Roofs: The Hidden Costs of Extreme Heatwaves

As temperatures soar across Michigan this summer, it’s not only air conditioners and people feeling the exertion – roofs are also suffering. Understanding the impact of extreme temperatures on roofing systems is key to taking proactive steps to roof asset management before the summer heat kicks in. Here are a few considerations to keep in mind:

UV Rays

Over time, ultraviolet (UV) rays from the sun can begin to deteriorate roof membranes, particularly those made of asphalt. This prolonged exposure to extreme UV rays can cause shingles to become dried out, cracked, discolored, or brittle, often leaving them more susceptible to water damage. During the summer months, when these rays are strongest, shingles can begin to break down without building owners even noticing, putting the entire roofing system at risk.

Thermal Expansion & Contraction

During extreme heatwaves, high temperatures can also cause a process of thermal expansion and contraction where roof membranes or other roofing materials expand during peak daylight hours and contract back down during the night. Over time, this continuous cycle puts strain on the roof membranes and roofing system, making them more prone to warping, cracks, weakened seams, and future leaks.

Trapped Heat

The health of your roofing system plays a critical role in the summer months when heat can become trapped beneath poorly insulated roofs, causing higher indoor temperatures and excess energy usage for air conditioning. These heat traps most often occur in older facilities with damaged insulation, and over time can severely weaken the structural integrity of the entire roofing system while also causing soaring utility fees.

All of these conditions, worsened by high temperatures and extreme UV rays, can significantly impact your roof’s service lifespan and leave you with hefty bills to pay. BTA is committed to partnering with building owners, developers, and facility managers to take heatwaves head-on. With seasonal inspections, preventative maintenance, and continuous oversight, you can have peace of mind that your roof will withstand even the most scorching summers.