Detroit experiences 80 to 100 freeze-thaw cycles each winter. Water seeps under composition shingles during the day when temperatures climb above freezing, then refreezes at night and expands. This expansion lifts shingle tabs and cracks sealant strips. Homes near the Detroit River and in low-lying areas like Delray see more moisture infiltration because of higher humidity levels. Installing ice-and-water shield two rows deep along eaves blocks this freeze-thaw damage. Standard felt paper absorbs water and fails within five years in Detroit's climate.
Detroit enforces the Michigan Residential Code, which mandates specific wind ratings for asphalt roof shingles based on your home's exposure category. Homes in open areas or near the riverfront require Class H wind-rated shingles, while homes in densely built neighborhoods can use Class D or Class F shingles. Peak Roofing Detroit pulls permits for every roof replacement, ensuring your installation meets local code requirements. This matters when you sell your home because unpermitted roof work complicates title transfers and mortgage approvals. Local building inspectors know our work and approve it without delays.