In the past, most 3-tab shingles were “Imperial”-sized at 12 inches wide and 36 inches long with an exposure of 5 inches. Now, most 3-tab shingles, typically referred to as “metric” shingles, are larger. Metric shingle exposure is proportional to their larger size, commonly 5 5/8 inches.
What is the spacing for shingles?
As a general rule for shingles equilibrated to ambient conditions (about 12% moisture content), shingles should be installed about 1/8 to 1/4 in. (3 to 6 mm) apart whereas shakes should be spaced about 3/8 in. (9.52 mm) apart and not more than 1/2 in. (13 mm) apart.Jul 25, 2014
How long and wide is a shingle?
Compare the sizes and advantages of every asphalt roofing shingle IKO produces. Once upon a time, traditional strip or 3-tab shingle dimensions, as well as asphalt shingle dimensions, measured 12 inches wide by 36 inches long. These are still considered standard asphalt shingle dimensions.