Better steel shingle systems, like the one shown ... that helps prevent ice dams in the winter and cools the roof and the house in the summer. To vent the roof, holes are cut in the old roof ...

During a reroof, old asphalt shingles are removed, and new underlayment and shingles are installed. But what happens to the old shingles? Traditionally, they end up in a landfill, but shingle ...