If you have beveled horizontal siding then use an inverted piece of siding as shown in the illustration here to create a plumb flat surface for attaching the ledger.
Attach an awning ledger board to a wood siding house.
Most house framing relies on building elements floors walls roofs being stacked one atop another.
This is the only way to ensure the connection is water tight.
Attach 2x6 rafters to the house with joist hangers and or supported by the ledger board.
Predrill and sink 1 2 in.
Also you need to keep enough open space approximately 3 4 inches above the top of the mounting bracket and ledger board.
Locate a position for a header or ledger board.
Determine how high it must be to provide an adequate slope to the roof.
Rafters are placed on 24 centers and attached to the beams and settle joists are attached as needed image 1.
In order to install the ledger board you usually need to remove the house s siding.
If necessary use a sliding bevel to determine angles needed where the rafters will meet the ledger board.
The awning should be at least 7 to 8 feet above the ground or the patio.
A ledger relies on the fasteners and strength of the wood ledger board and rim board of the house to carry the deck live and dead loads.
Find the wall studs or roof trusses that will have to support the ledger.
Never install a ledger board over the top of siding no matter what you hear this can weaken the connection.
Make it the full width of the porch or slightly wider depending on your porch design.
The screws should penetrate the ledger the sheathing the house and go into a framing beam such as a floor joist or a wall stud.
So make a mark above 7 to 8 inches and keep a minimum gap of 2 inches at one of the ends.
Attaching a deck ledger securely is only half the work of installing a ledger.
Anchor deck joists to the ledger with joist hangers filling each hole with galvanized joist hanger nails rated for pressure treated wood.
If your siding is not beveled you can simply screw the ledger tightly to it.