Flat Roof Estimate Calculator

Anything more than 9 in 12 is considered steep.

Flat roof estimate calculator.

A low slope roof is anywhere from 2 in 12 to 4 in 12. Don t just look at roofing material although a big chunk of the cost is the type of material you also need to consider how many stories the complexity of the roof slope or pitch how many chimneys skylights dormers ridges roofing company geographic location taxes. Use the following formula which also describes a right triangle. Calculate or enter the square footage of the attic or area to be vented.

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. 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 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. Conventional slope roof range between 4 in 12 and 8 in 12.

The average cost to replace a flat roof is 5 10 per square foot installing a simple 1 600 sq ft. The house base area is the area of land that the house covers and for more complex shapes can be estimated using the area calculator. When installing new roofing there are many factors to consider when estimating price. How to calculate roofing costs.

You can quickly estimate flat roof replacement costs for the following materials. The smallest pitch of a roof is 0 5 12. You can also calculate roof pitch even without using a roof slope 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 costs 8 000 16 000 depending on the material you choose. A common choice for flat roofing material is epdm rubber as it is highly durable waterproof and can be made from recycled materials. There are two main categories of roofing. Here are the equations you may use to solve for the length of the slope and the rafter.

A flat roof has a slope of 2 in 12 or less. Rafter rise run this formula is from the pythagorean theorem. The run always remains constant at 12 inches.