3 Causes Of Commercial Roof Blistering

If your commercial property is in a hot and humid region, you will likely experience roof blisters. This is due to the roof's exposure to intense heat, affecting the adhesion on the roof. Some areas of the roof will raise and fill with air or moisture, causing a bubble-like appearance. If left untreated, these blisters might rapture your roofing material. A roofing professional can remedy the blisters by reapplying and sealing the membrane. Below are the causes of commercial roofing blistering.

Defective Shingles

If you install low-quality roofing materials, your roof may blister more often. This is due to the shingles entrapping moisture between them which expands with an increased outdoor temperature. Although the blisters vanish after the water evaporates, some will burst with minimal impact leaving a hole in the roof. 

Also, the shingle's thickness may vary if you performed a DIY installation and failed to apply the asphalt layer consistently. This causes the less dense areas to melt from heat exposure and lose their grip on the protective granules. Consequently, de-granulation will cause the shingles' premature failure because ultra-violet exposure quickly wears out asphalt. Therefore, you must hire an expert roofer to install quality roofing materials to prevent blisters.

Improper Ventilation

Good ventilation will allow shingles to dissipate heat and moisture from the roof structure. However, poor ventilation will result in the roof deck overheating, causing the shingles to attain a critical temperature. Beyond this limit, the asphalt will begin to disintegrate, releasing gasses in small amounts which get confined within shingles, forming blisters.

 Alternatively, your roof may experience thermal shock due to intense and unexpected temperature fluctuation. This effect persists in poor ventilation below the roof, resulting in buckled shingles. Thus, you must engage a roofing company to install intake and exhaust vents for adequate ventilation to prevent blisters.

Installation Issues

As mentioned earlier, DIY roof installation can cause your roof to sustain blisters. For instance, when you fail to hammer a nail firmly, it can fall back. As a result, the shingle will raise, creating undulating formations and opportunities for leaks. In addition, if you install the underlayment incorrectly, it may form creases. Finally, you may notice a picture framing effect when you fail to install underlayment. This results in an unsightly view and degrades your roof's performance.

Regardless of the cause and severity of your roof blisters, you should contact a professional commercial roofer. They will inspect the cause of damage and fix it for reliable and prolonged longevity. Always ensure a qualified roofer performs all roofing tasks to avoid premature failure.