How To Work Out The Pitch Of Your Roof

Here s an easy safe way to determine the pitch from inside your attic.

How to work out the pitch of your roof.

For example if the roof rises 4 feet and the span is 16 feet twice the run then the pitch is 4 16 or 1 4. Calculate the rafter length substituting these values into the following formula. This free roof pitch calculator will take your roof width see the picture and rise the height of the roof and will calculate the roof pitch both as numeric value and as a degree. Place one end of a carpenter s level against the underside of the.

Pitch is the incline of the roof represented as the ratio of rise to the span twice the run. Measure the rise of your roof. Let s say it is equal to 1 5 m. Any of the following will give you a good measurement 1 x research source a rafter in the attic.

The overhang of a rafter at the end of the roof. Roof pitch is used to describe the slope or angle of the roof. If you want to know how to find the pitch of a roof then start with a calculator. Here are the steps to follow for the roof angle calculator.

Calculate the roof pitch as the proportion of rise and run. First enter the value of the rise and choose the unit of measurement from the drop down menu. Pitch rise run 1 5 6 25. Then enter the value of the run and choose the unit of measurement from the drop down menu.

To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. Rafter rise run 1 5 6 2 25 36 38 25rafter 38 25 6 18 m. Step 1 access a rafter. Measuring from the underside of the roof is usually the most accurate way to find the slope since there is no roofing material to make an uneven surface.

First measure 12 inches from one end of the level and make a mark. It always makes sense to the standard roof pitch angle spot on as the benefits of doing so are quite obvious. A barge rafter at the side of the gable step 2 position a level against the underside of the rafter. Even if you want to use a flat roof pitch calculator system you will be able to find one.

Finally enter the value of the rafter length and. Optionally you can use it as roof cost calculator if you also happen to know the average cost per square foot in your area. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed.