How To Measure The Roof For Shingles

1 roof square 100 square feet.

How to measure the roof for shingles.

Keep in mind that this estimation won t include any areas like garages or enclosed patios that the roof covers. How to measure a roof for shingles step by step the process of accurately measuring a roof involves first making a diagram of the roof to show the basic shapes of each roof plain and how they relate to one another. To calculate a rough estimate follow these steps. Use our roof pitch calculator to find the pitch of your roof.

You will then have to get the measurement of the rake of the roof. Next to calculate the square footage of each rectangular plane multiply the length by the width. For example a 4 12 pitch roof that is 100 square feet. 100 1 054 105 4ft 2.

To figure out the area of a square or rectangular room measure length and width and multiply them together to get the. The pitch of the roof is the rise over a 12 inch run. To do this you need to note that one tab will be equal to 1 foot. If the planes aren t rectangles this may be complicated.

First you must measure the length and width of each plane of the roof including dormers. Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area. If the existing shingles are standard 3 tab shingles you can get this measurement by taking note of the number of tabs along the eaves and ridges then determine the length in feet. Measure both the width gable side and the length eave gutter side.

Required measurements include the following. Roof pitch area multipliers. L 30 feet h 12 feet 30 12 2 180 square feet. Then each measurement is recorded on the diagram applicable to that roof surface.

The length l times the height h of a triangle is twice its area a2. If you re going to use an area calculator you can do this separately for each level of the home to ensure a more accurate calculation. Once you have this measurement you can then measure the footprint of the home and estimate the actual roof calculation based on the particular angle of the roof. Measure your roof accurately use a measuring tape preferably 50 or 100 feet long and get exact ground dimensions of your house.

The last step in measuring your roof for shingles is possibly the simplest because all it entails is using your measurements to calculate your roof s square footage.