How Do Satellite Roof Measurements Determine Pitch

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot.

How do satellite roof measurements determine pitch. For help determining the area of a sloped roof see here. If this distance measures 4 inches you have a 4 in 12 pitch. 8 inches and you have an 8 in 12 pitch. The first of which is that you don t even have to go up on the roof.

Zoom in on the roof then select tools at the top left then select ruler. 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. Often you express roof pitch as the ratio between the rise and the run in the form of x 12. If the angle changes too much when you zoom in go to view at the top left then click on reset at the bottom of the drop down menu then click tilt.

You ll need to figure out the vertical distance also known as the rise over a 12 horizontal segment also known as the run. The slope is the same as the pitch. If you are trying to learn how to measure roof pitch calculations accurately you should really consider the importance of using a calculator. For a roof with the ridge above one wall the span is the same as the run.

Use one of these three methods below to calculate your roof s pitch. This can make it even safer to do your measuring and it also removes a level of guessing to your calculation. There are many great benefits to using google earth to measure your roof but nothing is as good as using diy s satellite roof measurement. Pitch measurement method 1.

Divide the slope by two to get the pitch. You can t exactly get a ruler out to do it and guessing is just going to be suicidal in terms of the end product so if you are trying to learn how to determine roof pitch measurements you really do. The first thing you need to do is download and install google earth pro. Mark a spot on the level 12 inches from one end.

Depending whether the roof area is measured horizontally possibly from a drawing or photograph a correction factor is necessary to determine the actual area of the roof. For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally. Record these values as roof rise over run with the vertical measurement listed first and the horizontal second. The next step is to measure the pitch also referred to as the roof slope of the roof deck.

Roof pitch is used to describe the slope or angle of the roof. Roof pitch refers to the slope which the rafter creates. You ll need a level and a tape measure or ruler. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed.

Given pitch and a horizontal area measurement multiply the horizontal area by a correction factor corresponding to pitch provided in the table below to determine the actual area of the roof to be used in the roofing material calculator. You can assess this in two ways either as the roof pitch angles which the rafters make with the horizontal or the proportion between the run and the rise of the roof.