Roofing Shingle Square Dimensions

When installing roofing over bare wood roofing felt often called tar paper is laid down first.

Roofing shingle square dimensions.

Convert the area to roofing squares. For instance if the roof is 1550 square feet then it is 16 squares. 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. Regardless of their type or size shingles are sold by the square which is enough material to cover 100 square feet of roof.

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. 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. Bundles of roofing material per square. Yes meets astm d3462 requirements.

This is simply 100 square feet of roof. However 39 3 8 inches is the equivalent of one meter. One roofing square is equal to 100 square feet. Composition shingles asphalt or fiberglass come in bundles that cover 1 3 square.

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. 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. Widths are random or specified dimension shingles for a few species. In the united states available lengths are 16 18 and 24 the length being the vertical side.

In roofing terminology a square is 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. Admittedly it s rather confusing to call a shingle metric and then proceed to define it in imperial measure.

A square simply refers to a 10 x 10 square of roofing. 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. Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100. Instead a square is a term of measurement all its own.

To find the squares divide the overall roof area by 100 and then round up.