My plan was to pour concrete footings then run doubled up 2x8 beams setting on the footings.
Girdered roof deck.
A girder cantilevered or drop beam is a structural member positioned below the joists to support the weight of the frame.
These traditionally styled roofs are made of wood and feature large supportive beams.
These patio covers tend to look like an extension of the home s main structure.
Total height of low level ground level deck.
Recommended beam joist spans for deck framing.
The footings for porch decks must be larger than deck footings.
Decks typically are designed to support 55 pounds per square feet or psf of weight.
Building on an existing deck.
You have to do it thoroughly so that the rafters sit flush on it.
The roofing material is more traditional such as shingles.
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If the deck doubles as a porch it needs to be able to support no more than 80 psf.
For those who desire a bit more shade and privacy while soaking up the rays however a deck roof may be in order.
Attach the horizontal beam by using a nail gun.
Or you can lag screw through post bases and decking into the top of a deck joist or beam.
Height of deck against door threshold.
As a result most decks have inadequate footings to support a new porch roof.
As beautiful as they are functional the modern deck roofs are an extension of and not a deterrent from the luxurious deck.
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.
I am building a 10 x12 deck not attached to a ledger board.
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.
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.
Porch decks also require larger footings than deck footings.
A timber framed patio roof is perfect for your rustic or country home.
If the roof is attached to the deck it needs to be able to support the weight.
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.
Have no fear though.
The deck roof of today isn t the drab concoction so many of us remember.
Typical decks are designed to support 55 psf lbs per square foot.
For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements.
