Most composite decking materials like trex composite decking require minimum joist spacing for composite decking at 16 on center spacing for straight decking and 12.
Composite decking 16 inch joists.
Most composite and pvc decking brands like trex and azek recommend a minimum joist spacing of 16 inches oc.
When replacing the existing boards with composite decking on a deck with 24 inch frame spacing you will only need to add joists 12 inches on center between existing joists.
I m replacing wood decking that s laid over joists on 24 inch centers.
Wooden decks will have a frame spacing measurement of either 24 or 16 inches.
Some brands like weardeck let you get away with more reinforced with a layer of fiberglass on both the top and bottom weardeck boards easily allow for spans of 24 inches oc.
Deck 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.
I want a composite material and am willing to spend considerable extra to avoid having to add intermediate joists.
Most deck joists are centered 16 inches apart which is the maximum deck joist spacing for most low maintenance decking.
Duralife step clip composite decking hidden fastening system can reduce installation times by up to 50 percent.
Span entries are listed for 2 6 through 2 12 joists and 12 in 16 in and 24 in.
If you plan to install your decking at a 45 degree angle your joists may need to be 12 inches apart.
The illustrations one for cantilever joists and one for flush rim beam hung joists point out where joist span measurements are taken from the saddle of the ledger mounted joist hanger to the center of a dropped beam or saddle of the.
If you re planning to replace old wood decking with pvc or composite measure the deck joist spacing first.
Other benefits of the duralife step clip system include providing complete joist protection no tape needed and is designed to automatically create a uniformed 3 16 space between each composite deck board.
Before building a composite deck always read the installation instructions from the manufacturer paying special attention to the required joist spacing for composite decking.