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.

Regardless of their type or size shingles are sold by the square which is enough material to cover 100 square feet of roof. 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. This is simply 100 square feet of roof. A square simply refers to a 10 x 10 square of roofing.

Composition shingles asphalt or fiberglass come in bundles that cover 1 3 square. 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. Admittedly it s rather confusing to call a shingle metric and then proceed to define it in imperial measure. Widths are random or specified dimension shingles for a few species.

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. Convert the area to roofing squares. Yes meets astm d3462 requirements. Each plywood sheet is 4 x 8 feet or 32 square feet which coincidentally is almost exactly equivalent to the coverage of one bundle of traditional three tab shingles.

In the united states available lengths are 16 18 and 24 the length being the vertical side. Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100. 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. Bundles of roofing material per square.

To find the squares divide the overall roof area by 100 and then round up. Find gaf s specifications for timberline hdz here. So in a sense we re talking about square feet but using this unit makes it easier to calculate the footage or required materials and cost of a roofing project. When installing roofing over bare wood roofing felt often called tar paper is laid down first.

However 39 3 8 inches is the equivalent of one meter. One roofing square is equal to 100 square feet. 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. Roofing comes in rolls 3 feet wide and 36 feet long for a coverage of about 1 square.

In roofing terminology a square is 100 square feet.