Roof vents help make a home more energy efficient and allow humidity and hot air to escape the.
Open beam metal porch roof.
They also can be boxed in with wood after installation.
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Of course all of these solutions are a little more expensive than simply nailing 2 x 10s to the sides of your existing posts.
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.
For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements.
Metal beams could also be used and would eliminate the need for most of the supporting posts across the front of your porch.
Proper roof ventilation is an important aspect of home construction.
Step 1 determine the load per square foot that the roof must support.