Slope Pitch Of Roof

The ridge height is 1 9 to 1 7th the span an angle of 12 5 to 16.

Slope pitch of roof.

These types of roofs anything under 3 12 have increasingly shown jacksonville homeowners issues. A roof that rises 4 inches for every 1 foot or 12 inches of run is said to have a 4 in 12 slope. Lower slopes don t handle wind driven rain as well. Understanding your roof s pitch and slope low slope.

Steeper slopes increase the sail effect that makes them susceptible to wind. The rafter length is 3 4 the span about 48. The 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily. The rafters equal the span.

The ridge height is 2 9ths to 1 3 the span an angle of 24 to 34. Check the surface of the. Take a measurement of 12 inches using a level. Before taking any measurements you must first confirm that it s safe to walk on your roof.

The slope ratio represents a certain amount of vertical rise for every 12 inches of horizontal run. It determines how many inches the roof should rise for every 12 inches expanding on the horizontal side. Commonly used roof pitches were given names such as greek. Position your level against the roof until the bubble of the vial sits between two lines.

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. Take the measurement of the vertical.