This type of roof provides more options for extending the loft and installing windows allowing a greater amount of natural light into the room.
Roof off back of house.
If you decide on a shallow pitch porch roof use 2 by 6 foot rafters.
The positioning of your rafters will depend on the pitch of the porch roof.
Work from the view back not from the house out.
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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.
The porch roof may match the pitch of your home or have a more shallow roof pitch.
Calculate the sightline clearance height about 6 feet 2 inches in this case.
Choose a roof pitch 3 12 and roof structure 2x6 this places the new roof on top of the existing roof.
Because the gutter is removed you will need to install transfer flashing from the roof of the house to the patio.
It is almost similar to the first method but to make the patio roof a little bit higher you will need to remove the house gutter and place the back channel a bit higher.
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8 inches in this case.
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Determine the beam size.
Use screws to secure the rafter to the sill plate.
The ledger typically a 2 by 6 is usually designed to hold one end of the patio roof rafters.
A half hipped roof is almost identical to a simple hip roof design but instead the two sides of the roof are shortened creating eaves at the either side of the house.