At the beam end the rafters are fastened with a 10 inch structural screw through the top of the rafter into the beam.
How to attach a gable roof to a house wall.
This option is available only if the roof line has not been edited.
Often with new construction the roof flashing is first nailed to the wall.
Use screws to secure the rafter to the sill plate.
If you decide on a shallow pitch porch roof use 2 by 6 foot rafters.
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Use this procedure to add a gable to the roof line of a wall.
The porch roof may match the pitch of your home or have a more shallow roof pitch.
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.
Attaching a patio roof entails intermediate carpentry skills and creativity because there are many ways that you can choose from.
How to attach a patio roof to an existing house.
Then the house wrap and exterior wall covering are installed over this roof flashing.
The positioning of your rafters will depend on the pitch of the porch roof.
Joist hangers can help you mount each rafter to the house.
The most common roof to wall intersections involve either a gable roof with its ridge running perpendicular to the wall or a shed roof that slopes downward away from the wall.
There sometimes is a problem with movement differences of the wall and the roof decking when the flashing is fastened to both the wall and the roof.
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.
Most common ways to attach a patio roof to an existing house.
After the roof line changes you cannot add a gable using this option.
The blocking is held low to hide the roof wall intersection and to provide a 1 inch air space at the top for a ventilation channel.