Another sign it’s time to re-roof. Many roofers will attempt to inspect a roof with curled shingles. If your roof is not already leaking, rest assured, letting someone walk on the curled shingles is a sure fire way to get the leaks started. The biggest issue here is to correct the root cause. If there’s a layer of old shingles under the roofing material, you need to remove all the material down to the wood sheeting. Frequently, poor ventilation causes shingles to curl from excess heating. Proper ventilation is key to getting the most longevity out of your new roof. Fresno Roofing
