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