Most residential roof replacements take 2-5 days depending on several factors. Smaller, simpler homes with basic asphalt shingles might be completed in just 1-2 days, while larger or more complex projects involving tile or metal can extend to a week or more. Weather conditions significantly impact timelines – summer afternoon thunderstorms often cause delays due to safety concerns and quality control issues. The scope of work affects duration as well—complete tear-offs take longer than overlays, while addressing underlying deck damage requires additional time. Most professional companies assign sufficient crew members to complete typical homes within 3-4 days, minimizing the vulnerable period when your home lacks complete protection.