Flat Roof Estimate Calculator

Our calculator will estimate your total roofing cost installed including the cost of materials labor and warranty for any major type of roof including 3 tab asphalt shingles architectural and premium composition shingles pvc tpo epdm rubber built up roofs cedar shakes and shingles clay tiles natural slate and metal roofing.

Flat roof estimate calculator. Flat roof costs 8 000 16 000 depending on the material you choose. Use the following formula which also describes a right triangle. There are two main categories of roofing. The run always remains constant at 12 inches.

Calculate or enter the square footage of the attic or area to be vented. The smallest pitch of a roof is 0 5 12. Rafter rise run this formula is from the pythagorean theorem. You can quickly estimate flat roof replacement costs for the following materials.

Conventional slope roof range between 4 in 12 and 8 in 12. How to calculate roofing costs. Anything more than 9 in 12 is considered steep. 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.

A low slope roof is anywhere from 2 in 12 to 4 in 12. 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. The following tools estimate the area of a roof as well as the amount of materials necessary to construct a roof of a given area. A flat roof has a slope of 2 in 12 or less.

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. A common choice for flat roofing material is epdm rubber as it is highly durable waterproof and can be made from recycled materials. Here are the equations you may use to solve for the length of the slope and the rafter. A completely flat roof is a poor design as water and snow will collect on it eventually leading to your roof collapsing in from the weight of it all.

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 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. When installing new roofing there are many factors to consider when estimating price. You can also calculate roof pitch even without using a roof slope calculator.