timberline hd – biscayne blue. kerabit details of a shingle roof. it is recommended that the roof be sloped a minimum of 1 percent in order to minimize this issue. calgary residential flat roof dead valley. iko roof shingles driftwood aurora roofing contractors. deer valley at the grand lodge – carrie bishop on behalf of ironclad exteriors, inc. attached shed cm 111 x 314 h 218 with red bitumen roof shingles or green.