For best results refer to our wood and composite deck joist span table.
Diy deck joists. Pro tip start at one end of the ledger and position your tape measure so that the tip is snugly hooked. Once the joists are in place and the rim joists are attached don t secure the joists to the beams just yet. A drywall saw works great for this. Drive screws through every hole in the left side of the hanger to attach it firmly.
Both the 2009 irc and the dca6 09 allow 2 southern pine 2x10s to span 13 feet 1 inch at 24 inches on center at a design load of 50 psf. Once you re satisfied the deck joist frame is square secure the joists to beams with toenails or galvanized connectors. Check for square by measuring diagonals and tweak as needed. It s important to ensure that deck joists are installed securely and evenly across the area to allow for a safe and level decking to be laid on top.
In typical deck construction with a ledger on one side of the joist and beam on the other the size of the joists is driven by the size of the deck and based on the general maximum spans mentioned above. If you re building a new deck cover the joists with rubbery adhesive backed flashing tape this will add 50 or more to the cost of your. All our are fdsc approved and made from responsibly sourced timber. The larger the deck the larger the joists.
Starting at the left side of your deck position one 2x8 joist hanger at each mark. Decking joists are long pieces of treated timber used to create a framework on which to lay decking. That means these joists can span the 12 foot depth of the deck and the beam can be located at the perimeter.