Type of Asphalt Roofing Shingles | CertainTeed
In fact, if an existing roof deck (the structural surface beneath the roofing system) is in good condition, new asphalt shingles can even be installed over older shingles, reducing the need (and cost) of a tear off of the old roofing. Check with your contractor to see if this is a viable money-saving option for your roofing …