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.
How to attach roof ledger board.
Remove the shingles or siding in the area identified for the header board.
Attach the rafters to the house with joist hangers which supported by ledger boards.
Locate a position for a header or ledger board.
These 18 articles will teach you how to install flashing and bolt the ledger connection to the house rim.
Attach the rafters to the ledger boards and settle joists.
Locate the rim joist and mark an outline on the siding where you want to position the ledger board using a tape.
Determine how high it must be to provide an adequate slope to the roof.
Measure the length and width of your deck to attach the ledger correctly.
Step 1 take measurements measure the distance between floor joists the height of the sill plate and add 1 2 inch for flashing to vent moisture from the ledger.
How to attach a header board to a house for a porch roof.
How to attach a ledger board to a vinyl sided house 1.
Make sure to check the vertical beam to ensure that the end rafters are placed securely.
Cut a length of metal z flashing.
Step 2 cut away the vinyl siding.
Avoid cutting the house wrap beneath.
Cut away the marked area of siding with tin snips.
Make it the full.