Slope Pitch Of Roof

Understanding your roof s pitch and slope low slope.

Slope pitch of roof.

Take a measurement of 12 inches using a level. Roof pitch is the degree of building s roof slope. The rafter length is 3 4 the span about 48. Position your level against the roof until the bubble of the vial sits between two lines.

The ridge height is 2 9ths to 1 3 the span an angle of 24 to 34. Take the measurement of the vertical. Before taking any measurements you must first confirm that it s safe to walk on your roof. Check the surface of the.

It determines how many inches the roof should rise for every 12 inches expanding on the horizontal side. A roof that rises 4 inches for every 1 foot or 12 inches of run is said to have a 4 in 12 slope. 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.

While the cost of the materials and labor to reroof a steep slope roof is more expensive the longevity is. Lower slopes don t handle wind driven rain as well. The rafters equal the span. Some people prefer high pitches and some other choose low roof pitches each has their own advantages and disadvantages.

A 30 degree roof slope 7 12 pitch is the right pitch to aerodynamically handle high wind. The 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily. Steeper slopes increase the sail effect that makes them susceptible to wind.