To resist thrust the irc calls for a structural ridge required for any roof with a pitch less than 3 12 or for each pair of rafters to be securely connected to each other by a continuous ceiling joist r802 3 2006 irc.
Roof rake for shallow pitch roof.
However roof pitch is technically measured and defined differently and will not be discussed here.
Another popular snow roof rake you should check out is this suncast srr2100 24 inch snow shovel roof rake.
These are also the most common pitches for shed roofs.
Roof rake boards are installed in different widths based on the surface being covered.
Note that roof pitch is sometimes used in parallel with roof slope.
Like other suncast products this rake is smartly designed featuring a curved no stick graphite blade to prevent roof damage.
You can measure the roof slope on the bottom side of the roof deck at an easily accessible point such as the rake using a tape measure and simple geometry.
You ll need some assembly to get this all set and ready for snow raking.
This horizontal load or thrust can be considerable especially on a low pitched roof.
Again the most important consideration is the weather.
Shingles often not rated for shallow roofs.