Can you avoid tearing off your old asphalt shingle roof by putting a steel roof over it? Maybe. Most codes now allow no more than two layers of roofing before requiring a complete tear-off. So, if ...
MALVERN, Pa., April 16, 2025 /PRNewswire/ -- CertainTeed, a leading North American manufacturer of sustainable building materials, is proud to announce that its entire residential roofing shingle ...