To make the bottom cut i laid out a level cut for a 4 in 12 pitch.
How to connect patio roof at different levels.
Attach the horizontal beam by using a nail gun.
We re going to install it over top of the panels that have already been installed on the lower slope.
The piece that allows us to join the two different slopes is the pitch transition trim.
Remove siding from the house where the new roof will attach to expose rafters or other framing of the old roof.
Connect a flat roof to a sloped or pitched roof with a ledger board.
This allows water to flow off the upper panels out over the trim onto the lower panels and exits the roof at the eaves.
You have to do it thoroughly so that the rafters sit flush on it.
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.
After that to make it flush with the roof of the existing house cut the two outer rafters.
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Ways to attach a patio roof to a house.
Place the 2 by 4 inch piece of lumber along the center of the flashing.
Here are 5 different ways that you can do to attach a patio roof.
Slide the right edge of the flashing under the highest roof pitch.
This is the simplest way to attach a patio cover to your house.
Attaching a patio cover to an existing roof can be done in various ways depending on how you want it to look.
Position the flashing between the two roof pitches.