When it comes to residential construction your roof is a visible part of the structure.
Porch roof 1 12.
Measure 12 inches from the bottom of the level and mark the spot on your house.
Steeper slopes are ideal for areas that have higher snow loads and will also prevent the possibility of ponding water on the roof.
While the home s primary roof is a more steeply pitched hip roof the porch roof does not need to be the same pitch.
A steep slope roof is one whose slope is greater than 3 12.
If a roof rises 1 in a length of 12 this is 1 12 roof pitch.
If this is a porch on a trailer use corrugated sheet material can be found at lowes.
Then measure from the spot created vertically to the roof.
1 12 roof pitch angle 4 76 degrees.
The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run.
The detached porch below has a metal hip roof.
On this home the roof pitch is the same as that of the gables on the dormers.
However you can only use this pitch with built up roofing or specialized synthetic roofing.
This is the number needed for the pitch calculation.
By matching the pitch of the gables we were still consistent with the roof.