Locate a position for a header or ledger board.
How to attach a ledger board for a porch roof.
This board will support the rafters.
Use a speed square to mark and cut your rafter angle to the roof pitch.
In this instance minimum 1 2 lags are staggered along the length of the board.
Place the rafters on 24 centers attach them to the settle joists and beams toward the center.
If necessary use a sliding bevel to determine angles needed where the rafters will meet the ledger board.
Attach 2x6 rafters to the house with joist hangers and or supported by the ledger board.
This method may be one of the most ubiquitous ways of attaching a patio roof.
Temporarily nail or brace the ledger in place positioned and leveled at the desired height.
Determine how high it must be to provide an adequate slope to the roof.
It is one of the most common ways of connecting the ledger to the band board.
Find the wall studs or roof trusses that will have to support the ledger.
Fix the back channel to the fascia boards underneath the gutter directly.
Make it the full width of the porch or slightly wider depending on your porch design.
Deck ledger board removing the siding for the ledger board.
Attach the rafters to the ledger boards and settle joists.
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.
The rafter pitch angle.
Attach the rafters to the house with joist hangers which supported by ledger boards.
Deck ledger board attaching a deck ledger board to engineered floor joists.
Attach the metal joist hangers to the rafters.
Rafters are placed on 24 centers and attached to the beams and settle joists are attached as needed image 1.
Do not attach the header directly to a house cantilever.
To do this method you will have the back channel and fascia strengthened by reinforcing two rafters inside the roof.
The lags should pass through by at least 1 2 on the back side of the band board.
Flash and bolt the ledger board in place to the house wall.