You will need to make sure that each of the posts is plumb.
How to support porch with exposed beams and metal roof.
Make a cutting on one of the sides of the horizontal roof beam on an angle.
The metal thickness is based on the width of the space to be spanned.
For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements.
We show you the steps involved and calculations required for buildng a roof for your porch or constructing one over your deck or patio.
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The figures are based on quality materials.
They also can be boxed in with wood after installation.
Beams can be solid lumber or be built from lengths of 2 by lumber nailed together with 1 2 inch pressure treated plywood spacers in between this forms a 3 1 2 inch thick beam that is equal to the width of a 4 by post.
Attach the horizontal beam by using a nail gun.
Building a porch roof requires basic carpentry and porch roof framing knowledge.
It is not a continuous post however.
With the first porch roof support in position you can then continue to work along the porch.
You have to do it thoroughly so that the rafters sit flush on it.
The next post sits atop this floor beam directly above the lower post and runs up to the next floor beam or to the roof beam.
Metal beams could also be used and would eliminate the need for most of the supporting posts across the front of your porch.
We show you how both a typical rafter style porch and truss roof area constructed.
If the post is not going to be perfectly level use a pry bar on one corner and shim the post before you secure it into position.
A flitch plate is a metal plate sandwiched between two framing members such as 2 x 10s.
In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.
A post for each story sits on the floor surface up to support the floor beam above it.
After that to make it flush with the roof of the existing house cut the two outer rafters.