This is what i m use to seeing.
How to attach lean to roof to wall.
Fasten the nailer to the side of your existing building where you will attach the upper end of your rafters.
Ledger should be fastened directly siding removed to the wall studs ledger using min of d lag bolt in combination with fender washers.
How to attach a lean to roof to a wall shed roof the roofing felt.
Use right size of rafters and headers.
You should confirm this with your local building department before construction.
Design lean to roof per your local building codes.
When attaching ledger board to an existing wall install proper flashing when required.
Cut out a notch on the top of your posts as shown in the image above.
The preferred spot would place the lean to under the overhanging.
On a two story house you can usually tie the ledger into a band joist also called a rim joist located between the floors as shown below.
Attaching below the ridge.
In the case of a lean to roof over an addition the existing rafters will have to be cut away to accommodate the addition and the shed roof will require support where.
The birdsmouth should overlap at the pitch when the panels and wide and attach to the greenhouse is ideal if the ceiling line and the original siding on the structural screw through the outside wall of the rafters stop into the.
Once the ledger is attached you can start working on the post footing.
Determine where the lean to will be attached to the existing building.
Cut the 6 inch thick lumber into blocks that run the length of the lean to.
If attaching a patio roof to a ledger beneath the eaves does not allow for enough headroom you can set the new patio roof s rafters on the wall s top plate.
This is where the supporting post will rest.
To attach a wooden nailer to a metal sided building use a self drilling screw with sufficient threads to hold the nailer tightly.
If possible nail through the siding into the building s framing members.
How to attach a lean to to an existing metal building.