Floor Joists For Deck

For a more rigid feel 12 or less may be preferred.
Floor joists for deck. The finished floor is then installed on top of the subfloor. Deck joist spacing should never exceed 16 on center with the exception of max deck boards which allow for maximum 24 on center. The thickness of plywood panels in a subfloor is regulated by the. The larger the deck the larger the joists.
I prefer to double the outside joists as do some deck builders which adds 2 joists for a total of 11. Composite deck joist space. The subfloor is the decking installed on top of flooring joists. If adding additional framing be sure to keep all boards level and in plane across the tops.
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 deck s floor can only span so far before the. Here s a helpful chart covering the most popular wood framing species and their maximum allowed spans. That means these joists can span the 12 foot depth of the deck and the beam can be located at the perimeter. Nine joists will be needed for the 16 foot width.