If you decide on a shallow pitch porch roof use 2 by 6 foot rafters.
How to attach gable porch roof to house.
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The complexity of the job will vary with the size of roof from a simple entryway covering to one over a large screened in area.
Position and secure the gable porch truss flat against the top plate of the porch s end.
Joist hangers can help you mount each rafter to the house.
A house attached patio roof takes advantage of the house s structure by supporting one end of the roof on a ledger mounted horizontally to the house.
A common element in adding porch roofs is fastening one end to the house either to a wall or to a roof.
Step 1 position the porch truss.
That usually is done with a header or ledger board secured to the house.
Start nailing the ridge board to the gable roof.
The ledger typically a 2 by 6 is usually designed to hold one end of the patio roof rafters.
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Use screws to secure the rafter to the sill plate.
Extend a cord or line on the level from the truss s peak to the roof line s highest peak.