Modified bitumen roofing is a popular choice for flat or low-slope roofs because it combines the durability of asphalt with added rubber or plastic modifiers for flexibility. Wind uplift happens when strong winds create pressure differences that try to lift the roofing material off the surface. For modified bitumen, this often occurs if the sheets are not adequately adhered or fastened, or if the edges and seams are weakened by aging, poor installation, or damage. High winds can get under loose edges, lifting sections of the roof and causing bubbles or blisters in the membrane. Over time, this can lead to leaks, water damage, and even more severe structural issues if not addressed.
To safely check for signs of wind uplift, you can inspect your roof from the ground or safely from a ladder if conditions allow, looking for blisters, wrinkles, or loose edges along seams and flashings. After a storm, watch for any new damage or pieces of roofing material on the ground. If you notice these issues or suspect the membrane is pulling up, it’s best to call a professional roofer. When consulting a contractor, ask if they use proper adhesives and fasteners rated for high wind zones and if their work meets local building codes and warranty standards to prevent future problems. Also, inquire about the warranty coverage on wind damage and the maintenance practices they recommend to keep your roof secure over time.