To perform roof waterproofing in Detroit, Michigan, follow these steps: First, inspect the roof for damage, cracks, or worn flashing. Clean debris like leaves, moss, or dirt to ensure proper adhesion of waterproofing materials. Apply a rubberized asphalt or synthetic waterproofing membrane, focusing on valleys, chimneys, and edges. Secure flashing with corrosion-resistant fasteners and seal gaps with caulk. Install or repair gutters and downspouts to direct water away from the foundation. Finally, conduct seasonal inspections, especially after heavy snowfall or storms, to address ice damming or moisture retention. Use weather-resistant materials like EPDM or TPO membranes, which perform well in Detroit’s cold winters and occasional humidity.

Detroit’s harsh climate and frequent weather extremes necessitate robust waterproofing strategies. The region averages 100 inches of annual snowfall, with temperatures often dropping below freezing in winter, increasing the risk of ice damming and ice buildup that damages roofing. High humidity and occasional summer thunderstorms also contribute to moisture infiltration, accelerating wear. Data from the National Weather Service shows that 40% of residential roof failures in Michigan are linked to water damage, with Detroit’s older buildings particularly vulnerable due to outdated materials. A 2022 study by the Michigan State University Extension highlighted that 60% of waterproofing failures in the area occur due to improper flashing installation or inadequate drainage. Using durable, cold-weather-compatible materials like EPDM (ethylene propylene diene monomer) or TPO (thermoplastic polyolefin) membranes, which resist cracking in freezing temperatures, is critical. Local building codes also mandate minimum drainage slopes (1/4 inch per foot) and corrosion-resistant fasteners, ensuring compliance and longevity. Regular maintenance, including twice-yearly inspections and gutter cleaning, reduces long-term costs by preventing minor issues from escalating into major repairs. By addressing these factors, property owners in Detroit can mitigate risks and extend roof lifespans up to 20 years.