Slope Pitch Of Roof

A roof that rises 4 inches for every 1 foot or 12 inches of run is said to have a 4 in 12 slope.

Slope pitch of roof.

The rafters equal the span. Some people prefer high pitches and some other choose low roof pitches each has their own advantages and disadvantages. The 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily. Position your level against the roof until the bubble of the vial sits between two lines.

Take the measurement of the vertical. It determines how many inches the roof should rise for every 12 inches expanding on the horizontal side. Roof pitch is the degree of building s roof slope. Take a measurement of 12 inches using a level.

The rafter length is 3 4 the span about 48. Check the surface of the. Commonly used roof pitches were given names such as greek. Before taking any measurements you must first confirm that it s safe to walk on your roof.

While the cost of the materials and labor to reroof a steep slope roof is more expensive the longevity is. The slope ratio represents a certain amount of vertical rise for every 12 inches of horizontal run. If the rise is 6 inches for every 12 inches of run then the roof slope is 6 in 12 the slope can be expressed numerically as a ratio. The ridge height is 2 9ths to 1 3 the span an angle of 24 to 34.

Lower slopes don t handle wind driven rain as well. These types of roofs anything under 3 12 have increasingly shown jacksonville homeowners issues. Understanding your roof s pitch and slope low slope.