Formula For Firuring Out Roofing Materials

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.

Formula for firuring out roofing materials.

Add the price per square of materials to get an estimated material cost. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. The other 60 is labor. But keep in mind that materials typically only account for 40 of the total cost of square roofing.

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. 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. To figure out your roof s area a simple geometry can be used.

Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square. Divide the entire length of the roof by 2 feet to find out how many rafters you ll need to frame the 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. Dimensions measured from the ground.

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. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. 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. Find how many sheets of plywood you need to sheath a roof to find the amount of plywood needed to cover a roof start by finding the area of the roof. Find the area of a roof. 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.

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. Simply enter your roof dimensions and roof type such as gable or hip and approximate roof pitch. Roofing is measured in squares. Although ceramic tile roofs are expensive they can have a life span of over 100 years.

Calculate framing and decking for a roof.