Slope Pitch Of Roof

Understanding your roof s pitch and slope low slope.

Slope pitch of roof.

It determines how many inches the roof should rise for every 12 inches expanding on the horizontal side. These types of roofs anything under 3 12 have increasingly shown jacksonville homeowners issues. Before taking any measurements you must first confirm that it s safe to walk on your roof. 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.

Lower slopes don t handle wind driven rain as well. The ridge height is 1 9 to 1 7th the span an angle of 12 5 to 16. The slope ratio represents a certain amount of vertical rise for every 12 inches of horizontal run. The rafters equal the span.

Position your level against the roof until the bubble of the vial sits between two lines. While the cost of the materials and labor to reroof a steep slope roof is more expensive the longevity is. A roof that rises 4 inches for every 1 foot or 12 inches of run is said to have a 4 in 12 slope. Take the measurement of the vertical.

Steeper slopes increase the sail effect that makes them susceptible to wind. Take a measurement of 12 inches using a level. Commonly used roof pitches were given names such as greek. Check the surface of the.

Some people prefer high pitches and some other choose low roof pitches each has their own advantages and disadvantages. The rafter length is 3 4 the span about 48. Roof pitch is the degree of building s roof slope.