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Roof measurement practice.
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To use the direct roof slope measurement procedure shown just abofe in addition to safe access to a roof that won t be damaged by touching or walking on it you need.
This term can also refer to the amount of roofing material that will cover 100 square feet.
How to measure a roof.
For square or rectangular roofs you ll only need to record the length and width.
On a typical roofing job each pack of asphalt shingles will cover 1 3 of a square or about 33 3 square feet.
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1 roof square 100 square feet.
A single square is an area on the roof of 100 square feet.
Architects and builders frequently show only a roof outline on their blueprints leaving out the roof square measurements as well as the linear roof measurements.
Using your tablet or smartphone easily upload a blueprint.
With iroofing that s no problem.
Extend your tape measure along the outer edges of the roof to find its length and width in feet.
Trace the linear features of the roof.
Complete one side at a time before moving on to other areas.
So if you divide your answer of a product of length times height by two you will get the area of a triangle.
This procedure to measure roof slope can be performed on the roof or from a ladder at roof edge.
A tape measure and a carpenter s level.
The length l times the height h of a triangle is twice its area a2.