The sheet acts as a backup at a vulnerable junction.
How to seal a hip roof to a wall.
Allow the caulk to dry completely.
The porch roof may match the pitch of your home or have a more shallow roof pitch.
Apply a generous bead of waterproof roof caulk to both edges of every 6 inch wide horizontal end lap seam with a caulking gun.
Joist hangers can help you mount each rafter to the house.
In the same way that we use z trim for the installation of end wall flashing and sidewall transition we re going to do the exact same thing here on the hip.
The positioning of your rafters will depend on the pitch of the porch roof.
Next i ll remove the hip cap get our z trim cut them to length and install them.
Here i have a longer length.
Ideally i like to start by installing a 3 ft.
Sheet of housewrap or even better a piece of self adhering roof underlayment to the wall before the first truss or roof rafter is placed against it.
If you decide on a shallow pitch porch roof use 2 by 6 foot rafters.
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.