On the header side the rafters are typically notched with a birdsmouth over the top of the header or top plate of the porch wall.
Build pitched roof over porch.
Once the trusses soffit and fascia are in place lay the roofing felt in place.
Then attach drip edge over the roofing paper.
Once completed roofing paper will be installed.
Draw the plan of you porch roof and make calculations.
Accurate and detailed plan and is crucial to building a durable and good looking porch roof.
Nail the shingles to the felt starting from the outside in and cutting to fit when you reach a corner or edge.
Your porch roof pitch should maintain the same pitch also known as rise and run as the other roof lines on your home or as a minimum the pitch of the roof directly above the porch roof.
Cedar shingles are a dream.
Fit the lead flashing and cedar shingles this is a really satisfying part of the job.
Calculate rise and run it is quite a simple task if you use the special online calculator to determine pitch roof slope and cut the rafter to the proper length.
Fit the siding to the gable i then nailed the shiplap siding onto the gable of the roof for the record all the.
Sheathing 1 2 inch plywood or osb is nailed to the rafters.
Collar ties are horizontal braces that can be installed between opposite rafters to add strength and lateral stability.
Finish the siding with something cool.
Now you can begin shingling your roof preferably with asphalt shingles.
When building a porch roof asphalt shingles or other roofing material are then attached over the roofing paper and drip edge.