Roof Estimating Formulas

To get the slope of your roof based on degrees roof rise or x inches per 12 run use our roof pitch calculator.

Roof estimating formulas.

Steep slope roof pitch of 12 or 45 degrees. Ranch house using asphalt roof shingles. 1 roof square 100 square feet. The average roof replacement cost is 4 200 6 600 on a 1 600 sq ft.

Roof pitch roof pitch is the measurement of a roof s vertical rise divided by its horizontal run. In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches. Roofing cost can vary widely depending on the size and complexity of your roof type of materials you use as well as your location. However if you use premium materials such as metal wood shingles clay tile etc the cost of your roof will be at least 9 500 16 000.

You can also calculate roof pitch even without using a roof slope calculator. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. Medium slope roof pitch of 6. L 30 feet h 12 feet 30 12 2 180 square feet.

It is often compared to slope but is not exactly the same. Medium steep slope roof pitch of 9. The length l times the height h of a triangle is twice its area a2. Otherwise use the table or diagram below.

A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. So if you divide your answer of a product of length times height by two you will get the area of a triangle. Medium low slope roof pitch of 3 or 4. To accurately calculate the area of your roof you must first determine its slope or pitch.