Most decks use 16" on center spacing for joists. Most decking is not strong enough to support longer spans than 16". Some builders reduce joist spacing to 12" on center to strengthen the deck frame or to increase maximum allowable joist spans. Joist Spacing for Composite Decking
Get PriceHow far apart should deck joists be spaced? Deck joists are typically spaced either every 12 inches or 16 inches on center. The maximum joist spacing you can use will depend on the size and allowable span of your joists. What's the maximum deck joist span?
Get PriceDeck joist spacing should never exceed 16” on center (with the exception of MAX deck boards, which allow for maximum 24" on center). For a more rigid feel, 12” or less may be preferred. If adding additional framing, be sure to keep all boards level and in plane across the tops.
Get PriceSpan entries are listed for 2×6 through 2×12 joists and 12 in., 16 in., and 24 in. on-center spacing.
Get PriceDeck joist spacing is the distance between joists, measured from the center of one joist to the center of the next, and is commonly 12, 16, or 24-inches. The span is the distance a joist traverses from ledger to beam, or beam to beam, without support. The narrower the spacing between joists, the greater the span can be.
Get PriceBut sometimes, they can be a bit unclear when it comes to a crucial component of your deck frame – joist spacing. Decking manufacturers may recommend anywhere between 12 and 16 inches for commercial decks and 12 to 24 inches for residential decks.
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