You have to do it thoroughly so that the rafters sit flush on it.
How to attach a shed roof to a wall.
For a basic shed wall with no windows or doors your wall will consist of a bottom and top plate with studs fastened in between at even intervals.
Make a cutting on one of the sides of the horizontal roof beam on an angle.
In both cases the weight of the roof is.
Framing studs are precut for standard wall heights and save time and waste cutting 8 studs down to length.
After that to make it flush with the roof of the existing house cut the two outer rafters.
How to attach a shed roof to an existing roof.
Work from the height of the outside of the new shed roof.
Check your local building codes before beginning construction.
If you have a square porch you need.
Determine a pitch or slope which will affect the placement of the connection to the existing roof.
The gable rafters on either side of the shed roof are doubled and short cripple rafters run between the header and the ridge above it.
Acquire any necessary building permits before starting work.
In a shed roof the rafters intersect the wall at a right angle at their upper ends and their lower ends rest on the exterior wall of the addition.
If it is impossible to attach the ledger to a floor joist then fasten the ledger to wall studs which are generally located on 16 inch or sometimes 24 inch centers and doubled up around doors windows and other openings.
A shed roof should slope at least 1.
The end of the roof will affect that.
Temporarily nail or brace the ledger in place positioned and leveled at the desired height.
Build support columns to help support the weight of your porch roof.
An 8 foot wall uses 92 5 8 9 foot are 104 5 8 and 10 foot use 116 5 8.