Roof Area Factor

Calculating area is easy in two dimensions but nearly all roofs slope up to a peak which adds a third dimension.

Roof area factor.

It affects walkability as well as drainage and roofs in areas of high rain or snowfall tend to have steeper pitches. Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used. The angle for 6 12 is 26 57 and in grades it is described as 50. Next place your ladder against your house at the gable end.

Roof pitch affects the actual area of the roof. Climb to the top of your roof. In construction the slope factor can be used to easily calculate the area of a roof. After that just plug in the corresponding factor.

Pitch of roof slope factor valley hip factor. 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. Grades are the measure of percentage. You need only a level and a tape measure to find the rise of your roof.

To calculate the area of your roof first you ll need to calculate the pitch of it. You need to first figure out the dimensions of the roof by multiplying the length with width to calculate the square footage. Fortunately you don t have to know complicated geometry to factor in the slope of your roof. Similarly grades and angles can be calculated for the actual pitch using the roof pitch factor formula.

As 6 is half of 12 it is considered to be 50. The roof pitch factor will help in figuring out the exact roof estimate. This 6 12 roof pitch factor can also be described in other measures. How to calculate the roof area of a building roof width m x roof slope height m half roof area m take this example of a perfectly square house with 76m floor space a 45 pitched roof and a 2 35m roof height.

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. First use your measuring tape to measure 12 inches on your large level and make a mark at the 12 inch line. 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.