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 new patio cover to existing roof.
Here are 5 different ways that you can do to attach a patio roof.
Design a roof extension over an existing patio.
Existing patio is outside the dining room on the west side of the house.
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This video looks at a couple of design options including attaching the roof ledger below that of the existing eaves and setting the patio roof.
Add fascia board to the end of your rafters to get the finished look.
When all the rafters are installed correctly form your patio roof by attaching the planks horizontally across the rafters.
If you are going to use shingles to cover the patio roof do not forget to install black roofing felt along with a single layer of oriented strand board.
This is the simplest way to attach a patio cover to your house.
When they are installed you can begin attaching roofing shingles.
If you want to save a little time and money you can also attach a patio cover instead of roofing products.
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.
Attaching a patio cover to an existing roof can be done in various ways depending on how you want it to look.