The footings for porch decks must be larger than deck footings.
Girdered roof deck.
Obviously the time to make this decision is before nailing the deck flooring in place.
Typical decks are designed to support 55 psf lbs per square foot.
The joists will rest on these two deck girders and the decking in turn will sit atop the joists.
Fasten the spacers points up to two beam lengths with 1 1 4 inch screws.
The deck roof of today isn t the drab concoction so many of us remember.
In our photo the deck beam and some deck joist top surfaces have been protected by additional flashing.
While metal deck can be produced in any material thickness between 16 and 22 special gauging will make the deck much more difficult to source.
Porch decks require 25 additional psf for roof loads for a total of 80 psf.
As beautiful as they are functional the modern deck roofs are an extension of and not a deterrent from the luxurious deck.
Cut pointed spacers from a sheet of 1 2 inch pressure treated plywood the points prevent rainwater from sitting on the plywood and soaking in.
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.
If the roof is attached to the deck it needs to be able to support the weight.
Have no fear though.
Attach the spacers at 16 inch intervals.
As a result most decks have inadequate footings to support a new porch roof.
Many porches use 22 diameter corner and intermediate.
Recommended beam joist spans for deck framing.
This type of steel roof deck has a 6 pitch and is available in a 22 20 or 18 gauge.
2 deep roof deck and has since replaced the previous industry standard 36 5 and 36 7 attachment patterns.
Porch decks also require larger footings than deck footings.
For those who desire a bit more shade and privacy while soaking up the rays however a deck roof may be in order.
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.
Other innovations include n 32 a 32 wide 3 deep roof deck panel and our new smooth series rivet attachment for our portfolio of cellular deck products.
Deck girder flashing tip.
First to the west coast market our new smooth series rivet attachment offers a.
Keeping water out from between the segments of built up deck beams can substantially increase the life of the structure.
Decks typically are designed to support 55 pounds per square feet or psf of weight.
How to install deck girder cantilever or drop beams a girder cantilevered or drop beam is a structural member positioned below the joists to support the weight of the frame.
