Replacing a roof in winter is possible, but it's not ideal. Cold temperatures can make shingles brittle and harder to seal, and snow or ice on the surface creates safety hazards for workers. Some contractors will do it if the weather stays dry and above freezing, but they might charge more or take longer. If your roof is leaking badly, a temporary patch might be smarter until spring, unless the damage is severe enough to risk further water intrusion. Either way, get a local pro's opinion first. can you replace a roof in winter 16