Girdered Roof Deck

Apr 28 20 11 17 am.

Girdered roof deck.

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. I am building a 10 x12 deck not attached to a ledger board. These traditionally styled roofs are made of wood and feature large supportive beams. Or you can lag screw through post bases and decking into the top of a deck joist or beam.

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. As beautiful as they are functional the modern deck roofs are an extension of and not a deterrent from the luxurious deck. Porch decks also require larger footings than deck footings. Make a cutting on one of the sides of the horizontal roof beam on an angle.

You have to do it thoroughly so that the rafters sit flush on it. Porch decks require 25 additional psf for roof loads for a total of 80 psf. These patio covers tend to look like an extension of the home s main structure. If the deck doubles as a porch it needs to be able to support no more than 80 psf.

As a result most decks have inadequate footings to support a new porch roof. Height of deck against door threshold. After that to make it flush with the roof of the existing house cut the two outer rafters. Have no fear though.

For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. 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. Total height of low level ground level deck. Attach the horizontal beam by using a nail gun.

A girder cantilevered or drop beam is a structural member positioned below the joists to support the weight of the frame. Many porches use 22 diameter corner and intermediate. A timber framed patio roof is perfect for your rustic or country home. Typical decks are designed to support 55 psf lbs per square foot.

The footings for porch decks must be larger than deck footings. If the roof is attached to the deck it needs to be able to support the weight. My plan was to pour concrete footings then run doubled up 2x8 beams setting on the footings. Recommended beam joist spans for deck framing.

The deck roof of today isn t the drab concoction so many of us remember. 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. Building on an existing deck.