2019 Roofing Calculator - How to Measure and Estimate a Roof Like a Pro

2019 Roofing Calculator - How to Measure and Estimate a Roof Like a Pro

How to Calculate the Area of Gable End With a Roofing Slope

1. Measure the width of the wall below the gable. ...
2. Measure the height of the wall from ground level to the top of the eaves, the point where the lowest part of the roof meets the top of the side walls. ...
3. Calculate the area of the wall below the gable by multiplying the width of the wall by the height of the eaves

How many square is my roof?

Roof surfaces are measured in “squares” – a “square” is equal to 100 square feet of the roof. To determine the number of squares on the gable roof above, divide its total of 24,000 square feet by 100 (24,000 ÷ 100 = 240). This means you would need 240 squares of shingles to cover that roof.

 

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How do I figure out how many roofing sheets I need?

Multiply the length of the roof by the width to establish the surface area in square feet. For example, if the length is 21 feet and the width is 10 feet, the surface area is 210 square feet -- 21 times 10 equals 210. Determine the width and length of the metal sheets to be used.

How do you estimate roofing?

Steps

1. Find the square footage of the roof. Measure the length and width of each portion of the roof, multiply length by width for each plane, and then add the planes together for the total square footage.
2. Determine the total number of squares. ...
3. Determine the bundles of shingles needed to cover the roof. ...
4. Account for waste.

How do you determine the pitch of a roof in degrees?

If you know the angle of the roof in degrees you can find the roof pitch by converting the angle in degrees to a slope, then finding the rise by multiplying the slope by 12. First, find the slope by finding the tangent of the degrees, eg. slope = tan(degrees). Then multiply the slope by 12 to get the rise.