Formula For Firuring Out Roofing Materials

Below there is a simple triangle and the math used to work out.

Formula for firuring out roofing materials.

Calculate framing and decking for a roof. In the roofing trade this is known as the installation cost and it can vary widely depending on the type of replacement roof that you are getting. For the decking multiply the length by the width of the roof convert to inches and divide by 32 the square feet of one sheet of plywood. To accurately calculate the area of your roof you must first determine its slope or pitch.

Divide the entire length of the roof by 2 feet to find out how many rafters you ll need to frame the roof. To figure out your roof s area a simple geometry can be used. Roofing is measured in squares. Our calculator will help you estimate the amount of roofing shingles needed for your project plus the cost of materials and accessories.

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. But keep in mind that materials typically only account for 40 of the total cost of square roofing. This will equal the number of plywood sheets you ll need. The most common roofing materials used in the united states include shingles membrane roofing and ceramic tile all of which have different life spans.

Roofing material calculator estimate bundles of shingles and squares calculate the size of your roof and estimate how many bundles of asphalt shingles rolls of felt and squares of roofing material are needed for a new roof. The other 60 is labor. The key is to be as accurate as possible since falling short or an overage could mean thousands of dollars when planning your roofing budget. Find the area of a roof.

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. Add the price per square of materials to get an estimated material cost. Shingle roofs typically have a life span of 15 30 years while membrane roofs usually last 5 15 years. Once the area is known divide by the area of a 4 8 sheet to find how much sheathing is needed.

Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square. Although ceramic tile roofs are expensive they can have a life span of over 100 years. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. Simply enter your roof dimensions and roof type such as gable or hip and approximate roof pitch.

Dimensions measured from the ground.