Recommended beam joist spans for deck framing.
Girdered roof deck.
As beautiful as they are functional the modern deck roofs are an extension of and not a deterrent from the luxurious deck.
Or you can lag screw through post bases and decking into the top of a deck joist or beam.
Sep 04 19 11 12 am.
Many porches use 22 diameter corner and intermediate.
Apr 28 20 11 17 am.
Porch decks require 25 additional psf for roof loads for a total of 80 psf.
After that to make it flush with the roof of the existing house cut the two outer rafters.
Height of deck against door threshold.
These traditionally styled roofs are made of wood and feature large supportive beams.
If the deck doubles as a porch it needs to be able to support no more than 80 psf.
The footings for porch decks must be larger than deck footings.
Attach the horizontal beam by using a nail gun.
Have no fear though.
For those who desire a bit more shade and privacy while soaking up the rays however a deck roof may be in order.
The roofing material is more traditional such as shingles.
These patio covers tend to look like an extension of the home s main structure.
My plan was to pour concrete footings then run doubled up 2x8 beams setting on the footings.
Where local building codes allow this practice you can bolt a patio overhead s posts directly to existing deck beams joists or other heavy structural members.
I am building a 10 x12 deck not attached to a ledger board.
Cantilevered beams are stronger than flush style beams because they rely on the strength properties of the wood rather than the individual mechanical and fastener connections.
Total height of low level ground level deck.
As a result most decks have inadequate footings to support a new porch roof.
You have to do it thoroughly so that the rafters sit flush on it.
Decks typically are designed to support 55 pounds per square feet or psf of weight.
For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements.
If the roof is attached to the deck it needs to be able to support the weight.
Porch decks also require larger footings than deck footings.
Building on an existing deck.
A timber framed patio roof is perfect for your rustic or country home.
The bigger you make your deck the more you ask of the framing timbers that hold up the deck s structure and the joists and beams that support the.
Make a cutting on one of the sides of the horizontal roof beam on an angle.
Maximum rafter spans for a patio roof in areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.
