We can use pythagorean theorem run2 rise2 c2 then find the square root.
How to buil d a porch roof.
Construct a frame for the top of the posts.
Notice that the tops of the 6x6 support posts are notched to hold the header beam.
But if it is not feasible due to.
Install the header beam.
Start with ledger board mounting.
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.
Detailed guide mount the ledger header board and install the rafters.
Install the 2 2x10 header beams to the notched 6x6 support posts.
How to build a roof on a porch.
Sheathing 1 2 inch plywood or osb is nailed to the rafters.
When building a porch roof asphalt shingles or other roofing material are then attached over the roofing paper and drip edge.
Use thru bolts for a solid and strong connection.
Make sure that the plans are accurate and go into enough detail.
In our example our porch roof would be 24 squared 576 plus 20 squared 400 which added together equals 976.
Erect support posts for the roof.
Step 2 drawing up plans.
How to build a porch roof properly.
Also take a look for anything that could make attaching the roof difficult including power cables nearby trees and phone wires.
Install the support posts.
Install temporary bracing to keep the support posts level and in place.
You can place the columns outside the porch area or install them on the porch deck.
Measure two 2 by 8 pieces of wood the length of the porch and two 2 by 8.
Once completed roofing paper will be installed.
Building a porch roof step 1.
I chose a pitched roof design and in this video take you through the entire job from start to finis.
See exactly how i made a simple porch roof step by step.
It s always a good idea to spend time planning the design of your porch roof before starting.
Cut 4 by 4 posts as long as you wish the height of the roof to be.
The rise and run of the roof is generally the replica of the main roof.
Cut the cross pieces of the frame.
While making the measurements the location of the window on top of the place for the porch must be determined.
The rise and run of the roof is generally the copy of the main.
Take the measurements of the.
Here s what to do.
Then attach drip edge over the roofing paper.
After the measurements are done and lines are marked it s time to install the rafter plate.
So your rafter length would be 311 4 inches.
Dig holes 18 inches.
Remember that the location.
Then taking the square root of 976 we get 31 24.