08-28-2013, 02:52 PM
A "20 year" roof only lasting 10 years doesn't sound right.
If the pitch is so low ( 2/12, 3/12 ) that a curled shingle holds and dams water you might be better off with metal or sheet roofing than asphalt shingles.
If the pitch is so low ( 2/12, 3/12 ) that a curled shingle holds and dams water you might be better off with metal or sheet roofing than asphalt shingles.