Treated Lumber For Deck Joists
The predominant species of treated wood is a regionally available softwood.
Treated lumber for deck joists. Inspect the board and trim off the rougher edge. Kiln dried treated carcassing 9 width. Pressure treated lumber can support more weight and span longer distances than cedar redwood or other woods commonly used for building decks. If you re building a new deck cover the joists with rubbery adhesive backed flashing tape.
Treat all sides of the reinforcing joist with a clear sealer and let it dry. But the 2015 irc included a new one table r507 5 that will make it easy for deck builders to spec a joist size for a given span and joist spacing. Take a few minutes occasionally to pull out the leaves twigs and other debris that gathers between deck boards especially where the decking crosses joists. Steel post cap connectors plywood post to beam cleats other connectors deck porch railings code requirements safety deck framing tables codes specifications questions answers about allowable spans for deck floor or porch framing.
Until a few years ago the irc didn t have deck joist span tables. Measuring the 2x10 pressure treated joist length to prepare for cutting. Use pressure treated lumber when you install the joists. Most composite and pvc decking.
Pressure treated lumber is the logical choice for the structural part of your deck the posts joists beams and other members you normally don t see. 2x8s 2x10s and 2x12s for joists stair stringers and beams. 6x6s for support posts and plywood. 45 mm 1 70 mm 1 95 mm 1 120 mm 1.
Position the reinforcing joist tightly against the damaged joist and attach it with 16d 3 5 galvanized nails driven every two feet or fasten it with 3 1 2 inch galvanized deck screws. Composite decking brands also generally require 12 inches o c joist spacing for 45 degree or angled composite deck board applications. This ensures that. 5 4x6s and 2x6s for decking.
Deck beam span table deck joist span table deck joist rule of thumb deck porch construction structural fasteners deck porch post beam connectors. Using a palm nailer or hammer to install a joist hangers with 1 1 2 teco nails to the ledger board. A drywall saw works great for this. It s also much less expensive.
Treated wood is generally available as dimensional stock in 2x4s 2x6s 4x4s and 2x2s for rail components. On center for standard straight composite decking installation. Always fill all the nail holes for deck harware. Decking sleepers timber sleepers timber decking composite decking decking accessories decking protection.
The majority of composite deck board brands including trex timbertech and more require deck joists spacing to be at 16 inches o c. Deck joist spacing for composite decking remains largely the same as if working with treated lumber.