Modified bitumen roofing is a durable, asphalt-based membrane often installed in layers with reinforcements like fiberglass or polyester for extra strength. It’s a popular choice for low-slope roofs due to its resistance to UV rays, weather, and temperature changes. Over time, though, it can develop cracks, blisters, or seams may weaken because of natural expansion and contraction or exposure to harsh elements. Regular maintenance helps catch issues early and extends the roof’s lifespan. Typically, inspecting your modified bitumen roof at least twice a year—in spring and fall—is advisable. After storms or heavy winds, it’s smart to check for any visible damage, such as loose or torn sections, pooling water, or debris trapped on the surface.
You can perform some simple checks yourself by carefully walking the roof if it’s safe and accessible, or using binoculars to look for signs of wear like bubbles or punctures. Clear away leaves or branches, and check the drain areas for blockage to prevent water buildup. Avoid walking too often to reduce the risk of damage. If you notice significant cracks, soft spots, or large blisters, these are signs to call a professional roofing contractor. When searching for someone, ask how they handle repairs on modified bitumen, especially how they ensure proper sealing of seams, and if they offer a warranty on their work. Also, inquire about their experience with maintaining warranties from the original manufacturer when they perform repairs, as improper fixes might void coverage.