How Do You Work Out The Area Of A Roof

Then proceed to draw the surface area of the roof that has a different pitch.

How do you work out the area of a roof. Pitch measurement method 1. On a ladder beside the roof place the level a foot or so up the roof hold it level and measure from the 12 inch mark on the level s bottom straight down to the roof. To calculate the area of your roof first you ll need to calculate the pitch of it. The calculated area is only an estimation.

The calculator cannot account for complex shapes based on a measurement of square footage alone. This distance is the rise. In cases where a roof has a complex shape such as in the image to the right measuring the dimensions and areas of each part of the roof to calculate total area will result in a more accurate measurement of area. L h 2 area calculating an area of a triangle when estimating a roof.

The roof slope height is 6 98m. Multiply the area by the pitch multiplier to get the roof s square footage. First multiply the length by the width. If the roof has multiple pitches such as those found on dormer windows or porches you will need to draw these separately.

With an online roofing calculator you will usually be able to drill down a bit deeper in order to see a fine grained cost breakout on a sq ft basis. Climb to the top of your roof. After drawing the perimeter of the roof add a new drawing layer with the plus symbol found in the bottom right corner. First use your measuring tape to measure 12 inches on your large level and make a mark at the 12 inch line.

Next place your ladder against your house at the gable end. Measure the distance from the surface of the roof to the bottom of the level at the 12 inch mark. 8 inches and you have an 8 in 12 pitch. Simply input the surface area of the roof choose from one of the available options and you will get your first roofing estimate.

How to calculate the roof area of a building. So if you divide your answer of a product of length times height by two you will get the area of a triangle. 1 roof square 100 square feet. Place the other end of the level at the peak of the roof and hold it level.

Next you will need to use a roofing materials calculator. If this distance measures 4 inches you have a 4 in 12 pitch. For example if your measurement is seven inches the rise is expressed as 7 12 in roofing terminology. Then take the product of these two dimensions and multiply it by your pitch multiplier.