With over 10 years of experience ... If you’re only adding new shingles—and don’t discover surprise roof repairs underneath the old later—calculate the cost by assuming that a standard ...

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.

from poor quality roofing materials to structural damage affecting individual shingles. Understanding the causes and speaking with a professional roofing contractor can help you gauge the next ...