Slope Roof Factor

Roof pitch refers to the slope which the rafter creates.

Slope roof factor.

Often you express roof pitch as the ratio between the rise and the run in the form of x 12. Download the slope chart pdf. The roofing material should look dry and intact. 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.

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. Examine your roof and look for a safe place to climb. The headache of using pythagoras and trigonometry can be spared by making use of these charts. You could calculate the slope factor for every single roof pitch but as a public service many roofing.

Hold out your arms and hands perpendicular to the ground as you stand. 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. Roof slope multiplying factors theory and solution of factor.

The slope factor works with metric and imperial measurements. 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. In construction the slope factor can be used to easily calculate the area of a roof. Valley hip 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. Place your extension ladder against the roof. Climb up the ladder and onto the.