How Do You Measure Pitch On A Roof

Roof pitch refers to the slope which the rafter creates.

How do you measure pitch on a roof.

Here are a couple examples. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. 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. To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil.

Divide the slope by two to get the pitch. Slope the slope of a roof is represented as x 12 where x is the number of inches in rise for every 12 inches of run this is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares. How do you calculate a roof pitch. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.

Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. To accurately calculate the area of your roof you must first determine its slope or pitch. For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally.

The best roof pitch depends on the style of roof you are going for. First measure 12 inches from one end of the level and make a mark. For a gothic style the rafters must equal the span 60 while an elizabethan style requires the rafters to be longer than the span. Angle the angle of a roof is the same as the roof s slope except instead of being.

Using ruler and tape you can do it anyway of these ways. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. If it s four inches you have a 4 in 12 pitch and so forth for other measurements thereby determining your roof pitch. Often you express roof pitch as the ratio between the rise and the run in the form of.

Roof pitch is used to describe the slope or angle of the roof. If you do need to calculate the pitch an estimate or shortcut is usually more practical than measuring the roof s overall dimensions. Placing a ladder near the roof you will put a level a foot or so up on the roof hold it level and measure from the 12 inch mark straight down.