Formula For Roofing Shingles

Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run.

Formula for roofing shingles. Formula roofing has worked hard to establish its excellent reputation as one of colorado s most trusted roofing institutions. Waste is calculated at 7 5 for a gable roof and 15 for a hip roof which are typical in the roofing industry. Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square. Once you enter the basic roof dimensions and enter the type of roof you will get a very accurate result telling you exactly the amount of shingles that are required to cover your new roof.

The average bundle of shingles covers 33 3 ft 2 so three bundles of shingles are needed per square. Although ceramic tile roofs are expensive they can have a life span of over 100 years. Shingle roofs typically have a life span of 15 30 years while membrane roofs usually last 5 15 years. Asphalt shingles range in price from about 25 per bundle for a standard 3 tab style to around 50 75 or more for an upgraded architectural style.

To estimate roofing materials start by finding the total square footage of the roof and divide the number by 100 to determine the number of squares in the roof. Since transportation is a major cost factor expect prices to vary by location. When you order the shingles it is recommended that you order more than you will need. To figure out your roof s area a simple geometry can be used.

It is often compared to slope but is not exactly the same. The roof shingle calculator is a free estimator that serves a useful purpose during any roof repair or replacement project. 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. 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.

Then add 10 to the number to account for waste. Our calculator will help you estimate the amount of roofing shingles needed for your project plus the cost of materials and accessories. This will give you some leeway for breakage and any other form of shingle waste. If you have a more complex roof you should look at adding around 5.

This is because a steep sloped roof requires a taller chimney and more lumber for framing. A 12 in 12 roof can cost up to 50 more than a 4 in 12 roof. Below there is a simple triangle and the math used to work out. Simply enter your roof dimensions and roof type such as gable or hip and approximate roof pitch.

Most roofers will recommend adding 1 to the number of shingles you get to account for the waste.