Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal.
Rafter lean to roof.
Our roof rafter calculator tools are handy for calculating the number of rafters needed rafter length calculator lineal feet of rafter board feed in ridge and sub facia and the total board feet in the roof.
Lean to rafters then connect to a ledger board against a wall of another shed or house.
A lean to roof also called a shed roof slopes in one direction with rafters that rest against another structure at their high end and overhang support posts or an exterior wall at their low end.
If you ve wondered how to frame a lean to roof off a pole barn this video will show you how i did it.
The roof rafters provide integral structural support to the roof.
Enter this measurement into the calculator and select a roof pitch and the length of the rafter will automatically returned along with the rise.
I cut rafters out of 2x8s frame this pole barn lean to.
In other words if there is a 1 1 2 ridge board nailed into the wall and the width of the lean to is 96 then the run will be 94 1 2 96 1 1 2 94 1 2.