Divide the measurement in half and mark the center of the wall at head height below the peak.
Measuring a roof for shingles from the ground.
Keep in mind that using google earth isn t going to give you a 100 percent accurate reading but it will give you a basic idea of the size of the roof for your calculations for the roofing materials.
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Measure an outside wall from end to end where the gable roof comes to a peak above the wall.
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Multiply the pieces by inches based on exposure then divide by feet.
The base is the bottom edge of the roof while the height is what you measure from the base to the top of the triangle in a straight perpendicular line from the bottom edge of the roof.
Hips and top ridge.
Estimating the area from ground level is less precise than measuring each side individually but it can make a quick easy and safe alternative when redoing a square or rectangular roof.
Visually count how many ridge pieces are on your roof.
To calculate the size of the roof you need to measure the size of the roof as if it were flat account for roof pitch calculate square footage and finally determine how many squares of material are required for the roof the calculator above can handle all of this simply enter the length width and pitch and it will determine the size of the roof in squares.
Don t use this as your only method of measuring.
To measure an irregularly shaped roof you ll need to get on top.
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You may want to measure a couple to be sure.
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Just use it as a starting point and you ll have a fairly basic idea of what you re dealing.
Exposure comp shingles 5 5 shake 10 tile 13 5 14.
So if the base is 5 feet 1 5 m and the height is 4 feet 1 2 m then you re equation would look like this.
5 feet 1 5 m x 4 feet 1 2 m 2 10 square.
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I typically begin by counting the of shingles from left to right which gives me the total width of the section in feet.
And then i will count the of rows of shingles between the gutter and the peak of the roof and then divide the number by 2 which gives me the height measurement.
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