How To Figure Out How Much Roofing You Need

With that as background you are now ready to estimate how many shingles you will purchase for your roof project.

How to figure out how much roofing you need.

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. Approximate price in dollars. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. Outside of the u s a degree angle is typically used.

If your roof has dormers hips or other complex elements don t forget step 2 determine the total number of squares. 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. The first step in a free roofing estimate is measuring the roof dimensions. For example your roof could measure 12 feet to its peak.

Keep in mind that the average size of a roof is 1 700 square feet so your total will likely be 10 higher or lower than this figure. Get the square footage of roof and divide it by 100 and it will give the number of squares you need and for every decimal number over 3 buy a bundle to achieve the amount of material. Determine the length of the metal panels needed for one side of your roof by measuring from the fascia board the board attached to your roof joists to the ridge the peak of the roof. Divide the total footage by 100 to determine.

Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. You will need to express this size in terms of square feet. Enter square footage calculate or enter the square footage of the attic or area to be vented. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.

To accurately calculate the area of your roof you must first determine its slope or pitch. Roof type either gable or hip using these four inputs you will get several basic outputs. This number will tell you the total length of metal panels needed. 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 1 x research source if you have a simple gable roof you ll only need to measure and sum up the 2 planes of the roof.

Roof area measured in sq ft number of squares. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator. In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches.

This roof shingle calculator requires four basic inputs.