What are some common complaints about Owens Corning shingles?

Common complaints about Owens Corning shingles include issues with granule loss, color consistency, algae streaking on older lines, and nailing difficulties, though many complaints are related to installation rather than manufacturing. One frequent complaint is excessive granule loss early after installation, where homeowners find granules in gutters, which can be normal shedding but excessive loss reduces UV protection. Another complaint is color variation between bundles, especially with TruDefinition colors, where different production lots may have slight color differences if not mixed properly during installation. Some complaints involve StreakGuard algae protection not being as effective as expected in humid climates, leading to dark streaks after 5 to 10 years. Wind damage complaints occur when shingles are not nailed correctly in the SureNail strip, leading to blow-offs below rated wind speed. Some contractors complain that Owens Corning Duration shingles can be stiffer and harder to work with in cold weather compared to GAF. Historical complaints about Owens Corning included Organic Mat shingles from the 1990s that had premature cracking, but modern fiberglass mat shingles have resolved this. Most complaints are addressed by proper installation by an Owens Corning Preferred contractor, adequate attic ventilation, and mixing bundles from different lots for color consistency.