Slope Roof Factor

You could calculate the slope factor for every single roof pitch but as a public service many roofing.

Slope roof factor.

Climb up the ladder and onto the. Download the slope chart pdf. Roof pitch refers to the slope which the rafter creates. The roof slope factor chart also consists of conversion factors to determine the slope of the roof.

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. For roof slopes expressed as x in 12 rise in run the roof pitch multiplier is determined by finding the square root of rise run 1. A roof pitch multiplier also called a roof pitch factor is a number that is multiplied by the area covered by a sloped roof to produce the area of the actual surface of the roof. Roof area in square metres length in metres width in metres slope factor roof area in square feet length in feet width in feet slope factor.

A 10 slope roof should not be confused with a 10 pitch roof as a 10 slope roof means that the roof rises by ten inches for every foot of run. The headache of using pythagoras and trigonometry can be spared by making use of these charts. Once you ve figured out the pitch of your roof you can consult the following chart to discover the slope factor and hip valley factor. Valley hip factor.

The slope factor works with metric and imperial measurements. Roof slope multiplying factors theory and solution of factor. The roofing material should look dry and intact. Place your extension ladder against the roof.

How to determine roof slope factor 1. Often you express roof pitch as the ratio between the rise and the run in the form of x 12. Hold out your arms and hands perpendicular to the ground as you stand.