Early signs of roof deterioration that need attention. We diagnose and repair surface degradation before it leads to leaks.
Blistering and alligatoring are forms of surface deterioration that signal your commercial roof is aging and needs attention. While they may look like just surface issues, they indicate deeper problems that can lead to serious leaks if ignored.
These conditions are most commonly found on built-up roofing (BUR) and modified bitumen systems, but can affect other roof types too. Early intervention can extend your roof's life significantly.
Bubbles or raised areas on the roof surface caused by moisture trapped in the roofing system. As the sun heats the roof, the moisture expands and creates blisters.
Cracking pattern that resembles alligator skin. Caused by the asphalt or bitumen becoming brittle and losing its elasticity over time from UV exposure.
Understanding what causes these problems helps with prevention and early detection
Ultraviolet rays break down the chemical bonds in roofing materials, causing them to become brittle and crack. South and west-facing slopes are most affected.
Daily temperature swings cause roofing materials to expand and contract. Over time, this thermal stress breaks down the material structure.
Moisture in the roofing system turns to steam under heat, creating pressure that pushes up the surface layers, forming blisters.
Over time, roofing materials lose their flexibility and protective oils. They become hard, crack, and show alligatoring patterns.
We assess the extent of blistering and alligatoring, checking for underlying moisture damage and determining if the roof structure is compromised.
We cut out and remove blistered areas, allow moisture to escape, and patch with matching roofing materials. We also address the source of trapped moisture.
We clean and seal alligatoring cracks with appropriate fillers and coatings to prevent water infiltration into the cracked surface.
We apply elastomeric coating systems to seal the entire roof surface, providing UV protection and extending the roof's useful life by several years.
Blistering and alligatoring are warning signs that your roof needs attention. Contact us today for an inspection and repair options.