how to figure out how many square my roof is?
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Roof surfaces are measured in "squares." A square is an area of roof which measures 100 square feet. To determine the number of squares on the gable roof above, simply divide its total of 24,000 square feet by 100. The result is 240, and this means you would need 240 squares of shingles to cover that roof.
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Area of a square = side times side. Since each side of a square is the same, it can simply be the length of one side squared. If a square has one side of 4 inches, the area would be 4 inches times 4 inches, or 16 square inches.
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To find square feet, multiply the length measurement in feet by the width measurement in feet. This yields a product called the area, which is expressed in square feet (or square inches if you are calculating a much smaller space, such as a dollhouse).
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A few tips: To figure the size of your roof, see our square footage calculator. In roofing terminology, a "square" is 100 square feet. Composition shingles (asphalt or fiberglass) come in bundles that cover 1/3 square.
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A roofing square is equal to 100 square feet of the roof.
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For rectangular yards, multiply the length times the width. For example, if your yard is 10 feet by 15 feet, you would multiply 10 by 15 to get 150 square feet.
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The simplest (and most commonly used) area calculations are for squares and rectangles. To find the area of a rectangle, multiply its height by its width. For a square you only need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the area.
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For rectangular yards, multiply the length times the width. For example, if your yard is 10 feet by 15 feet, you would multiply 10 by 15 to get 150 square feet. For circular yards, divide the diameter by two, square the result and then multiply by 3.14.
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To find the area of a rectangle, multiply its height by its width. For a square you only need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the area.
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How to find the square footage of a triangle: Measure the base and height of the triangle (from the base to the highest point of the triangle) in feet. Multiply these two numbers. Then divide the total by two and you will have the triangle's square footage.
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One square is equal to 100 square feet. Examples where the unit is used are roofing shingles, metal roofing, vinyl siding, and fibercement siding products.
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Calculate your area Measure the length of your space. Measure the width of your space. Multiply the length by the width to calculate the area in square metres.
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1 Roofing Square: 10 feet by 10 feet = 100 square feet. Using an international foot of exactly 0.3048 meters length. 100 Square feet = 1 Roofing square = 9.290304 cubic meters (SI unit).
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The angle, or pitch, of a roof is calculated by the number of inches it rises vertically for every 12 inches it extends horizontally. For example, a roof that rises 6 inches for every 12 inches of horizontal run has a 6-in-12 pitch.
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For rectangles and squares, multiply width by height. For triangles, multiply the base by the height and then divide by 2. For circles, multiply the radius square by 3.14 (pi).
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A few tips: To figure the size of your roof, see our square footage calculator. In roofing terminology, a "square" is 100 square feet. Composition shingles (asphalt or fiberglass) come in bundles that cover 1/3 square. Roofing comes in rolls 3 feet wide and 36 feet long, for a coverage of about 1 square.
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Choose the calculator you like. A square of shingles covers 100 square feet of a standard roof. Shingles are packaged in lightweight bundles, intended for easy transport up and down a ladder and across precarious heights. Laminated and heavier three-tab shingles therefore require four to five bundles to cover a square.