Roof Shingle Formula

Formula roofing has worked hard to establish its excellent reputation as one of colorado s most trusted roofing institutions.

Roof shingle formula.

100 1 054 105 4ft 2. The pitch of the roof is the rise over a 12 inch run. 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. Shingle roofs typically have a life span of 15 30 years while membrane roofs usually last 5 15 years.

Formula roofing brings over 30 years of colorado specific roofing experience with materials including asphalt shingles clay and concrete tile slate metal roofing and flat roofing membranes and coatings. Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run. Our calculator will help you estimate the amount of roofing shingles needed for your project plus the cost of materials and accessories. Note that in the last 3 4 years costs of roof shingles and many accessories have gone down by an average of 18 20 currently the us national average for benchmark architectural shingles is around 74 51 square or 25 per bundle.

For example a 4 12 pitch roof that is 100 square feet. Step 1 find the square footage of the roof. Waste is calculated at 7 5 for a gable roof and 15 for a hip roof which are typical in the roofing industry. Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area.

The actual cost will vary depending on whether it is a composite asphalt shingle roof or a fiber cement concrete composite shingle installation. As you begin to calculate various costs you will see that the cost is a result of the interplay of many different variables including roof area in terms of footage measurement of any roof extras like chimneys or skylights and the dimensions of. Replacing an asphalt roof with new shingles will cost between 5 400 and 9 000 or an average of 7 211 for a 2 000 square foot home not including old roof removal. Rafter rise run from the pythagorean theorem.

If this distance measures 4 inches you have a 4 in 12 pitch. Roof pitch area multipliers. Divide the total footage by 100 to determine. If your roof has dormers hips or other complex elements don t forget step 2 determine the total number of squares.

Although ceramic tile roofs are expensive they can have a life span of over 100 years. 8 inches and you have an 8 in 12 pitch. Use our roof pitch calculator to find the pitch of your roof. The best part of a roofing calculator is that it offers a free insight into the total cost of the replacement roof project on a sq ft basis.

Generally roof pitch is calculated from the same formula that describes a right triangle. You can use the following equations to find the length of the rafter and the slope.