How To Work Out The Pitch Of Your Roof

If you want to know how to find the pitch of a roof then start with a calculator.

How to work out the pitch of your roof.

Rafter rise run 1 5 6 2 25 36 38 25rafter 38 25 6 18 m. This will allow your project to carry the depth and detail in the roof that you wanted as well as make sure that it will maintain a sturdy and effective nature throughout. Measure the rise of your roof. The overhang of a rafter at the end of the roof.

Even if you want to use a flat roof pitch calculator system you will be able to find one. Place one end of a carpenter s level against the underside of the. Here are the steps to follow for the roof angle calculator. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.

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. Calculate the rafter length substituting these values into the following formula. A barge rafter at the side of the gable step 2 position a level against the underside of the rafter. This online truss calculator will determine the all in cost of your truss based on key inputs related to the pitch width and overhang of your roof.

If you re thinking about replacing your roof with a new one you will need a roof truss calculator. 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. On the roof hold the level perfectly level and measure the height from the roof to the level 12 inches away from where the level touches the surface this will be the rise. First enter the value of the rise and choose the unit of measurement from the drop down menu.

Outside of the u s a degree angle is typically used. Pitch is the incline of the roof represented as the ratio of rise to the span twice the run. Then enter the value of the run and choose the unit of measurement from the drop down menu. Calculate the roof pitch as the proportion of rise and run.

Here s an easy safe way to determine the pitch from inside your attic. Step 1 access a rafter. Any of the following will give you a good measurement 1 x research source a rafter in the attic. Divide the height of your roof by the width not the full width if you ve measured the full width wall to wall divide this by 2 first h w to get your pitch as a percent.

Take your pitch percent and press shift maybe 2nd function on your calculator then press tan and than equals most smartphone calculators have a scientific option in the settings. Finally enter the value of the rafter length and. Pitch rise run 1 5 6 25. 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.

One method to find the pitch is to climb on the roof and measure the rise for a 12 run. To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level.