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.
How to attach shed roof to walls.
But you have to do it before you build the walls.
As with rafter style roofs toenailing is one of the most common ways of attaching a truss style roof to a wall plate.
Frame a wide doorway by bracing the shed roof temporarily and cutting studs with a reciprocal saw.
Cover the walls with board and batten 4 by 8 foot sheets of plywood nailed vertically to the sheathing strips with the seams covered by 1 by 4 inch batten boards.
They will be fastened to the floor and they will be attached to each other.
Install shed rafters from the ledger board to the outer wall using metal rafter hangers which attach to the ledger board with screws or nails.
When a shed roof intersects a wall a ledger board attached to the wall serves as a nailing surface for the ends of the rafters at their upper ends.
If you re building your own roof trusses the handiest place to assemble them is right on the shed floor.
Add decking atop the roof and nail on metal flashing where the shed roof joins the existing roof.
The best method is to snap chalk lines on the shed floor to outline the truss parts.
Toenail a truss into the top of the wall plate by nailing through the sides of the bottom chord at a 30 degree angle.
Attach roofing to the garage wall with bent metal flashing that goes up the wall and over the roof.
The ledger board in this case is essentially.
Fit rafter board into the u shaped hangers and nail it in place.
How to tie a additions roof to existing roof roof additions to existing roofs how to construct a roof from an exsisting shead how to change a roof line how to attach a deck roof to existing roof how to add a roof over porch attache porch roof on house attach shed roof to house adding a roof to screened in porch adding a roof to existing.
Leave this doorway open.
Your shed walls are going to attach in two main ways.
Nail a 2 by 6 inch header board between studs over that doorway and secure it with studs from the header to the floor.
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.
Build a real addition by removing the siding from the shed and building new walls.