How to Measure Square Feet for Shingle Hip Roofing
A hip-type residential roof is a traditional roof shape distinguished by a consistent slope on each side, from a top ridge downward to a protective overhang at each exterior wall, and a level perimeter fascia and overhang. In order to get an accurate calculation for the quantity of shingles needed for a hip roof, the roof's area must be measured and the procedure requires the application of a basic formula using a few primary measurements. Does this Spark an idea?
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Instructions
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1
Choose one section of the roof and measure the horizontal length of the lower edge. Label this dimension as the "base measurement." The measurement can be rounded up to the next full foot to make the calculation easier.
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2
Measure the dimension from the lower edge to the centerline of the ridge. Label this dimension as the "height measurement." Again, the measurement can be rounded up to the next full foot.
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3
Calculate the area of the roof section by multiplying the base measurement times the height measurement. The total is the area of the section in square feet. Example: For a hip roof section, the eave or base measurement might be 44 feet 9 inches and the height measurement might be 18 feet 6 inches. Multiplying 45 times 19 equals 855 square feet as the area of the roof section.
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4
Repeat Steps 1, 2 and 3 for each individual roof section. Add the total for each section together to calculate the roof's total area.
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5
Measure the length of the each hip line of the roof and the length of the ridge. The total of these dimensions will define the amount of ridge cap shingles required.
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6
Combine total base measurements gathered to determine the linear amount of drip edge flashing needed for the roofing.
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Tips & Warnings
Both asphalt and wood shingles are estimated by the number of bundles per "square." A square equals 100 square feet of surface coverage. For example, a roof that is 2000 square feet would require 20 squares of roofing materials.
