Roofing Shingle Square Dimensions

If it s a re roof project and you have access to the original paperwork from the last shingle installation that may be useful in showing the roof area.

Roofing shingle square dimensions.

To find the squares divide the overall roof area by 100 and then round up. Admittedly it s rather confusing to call a shingle metric and then proceed to define it in imperial measure. In the united states available lengths are 16 18 and 24 the length being the vertical side. Composition shingles asphalt or fiberglass come in bundles that cover 1 3 square.

Instead a square is a term of measurement all its own. Most composition shingles are 3 bundles per square most of the 40yr composition shingles are 4 bundles per square some 5 or more wood shakes 5 bundles per square. Roofing comes in rolls 3 feet wide and 36 feet long for a coverage of about 1 square. Iko was among the first roofing material manufacturers to introduce the metric size roofing shingle defined as being 13 1 4 inches long by 39 3 8 inches wide.

5 feet x 20 feet 100 square feet or 1 roofing square 2 feet x 50 feet 100 square feet or 1 roofing square 50 feet x 50 feet 2500 square feet so 2500 100 25 roofing squares. In roofing terminology a square is 100 square feet. For instance if the roof is 1550 square feet then it is 16 squares. Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100.

Square definition a square is the number of shingles it would take to cover 100 square feet of roof area with each row of shingles covering the tabs of the layer below it. Yes meets astm d3462 requirements. However 39 3 8 inches is the equivalent of one meter. The answer is the number of roofing squares for the roof.

When installing roofing over bare wood roofing felt often called tar paper is laid down first. Regardless of their type or size shingles are sold by the square which is enough material to cover 100 square feet of roof. One roofing square is equal to 100 square feet. Widths are random or specified dimension shingles for a few species.

Find gaf s specifications for timberline hdz here. This is simply 100 square feet of roof. Convert the area to roofing squares. Bundles of roofing material per square.

Imagine how cumbersome it would be to calculate by the square foot or yard that s a big number convert square feet to roofing squares.