Treated Lumber For Deck Joists

Decks get wet and may be framed with incised treated lumber so spans may have to be adjusted.

Treated lumber for deck joists.

On center for standard straight composite decking installation. This ensures that. It s also much less expensive. Kiln dried treated carcassing 9 width.

Use pressure treated lumber when you install the joists. Always fill all the nail holes for deck harware. 2x8s 2x10s and 2x12s for joists stair stringers and beams. Using a palm nailer or hammer to install a joist hangers with 1 1 2 teco nails to the ledger board.

Composite decking brands also generally require 12 inches o c joist spacing for 45 degree or angled composite deck board applications. Decking sleepers timber sleepers timber decking composite decking decking accessories decking protection. Treated wood is generally available as dimensional stock in 2x4s 2x6s 4x4s and 2x2s for rail components. Deck joist spacing for composite decking remains largely the same as if working with treated lumber.

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. The predominant species of treated wood is a regionally available softwood. 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. Until a few years ago the irc didn t have deck joist span tables.

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. 6x6s for support posts and plywood. 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. It has a much higher resistance to moisture than ordinary lumber even more than rot resistant types like redwood and cedar.

Inspect the board and trim off the rougher edge. The majority of composite deck board brands including trex timbertech and more require deck joists spacing to be at 16 inches o c. A drywall saw works great for this. Measuring the 2x10 pressure treated joist length to prepare for cutting.

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. 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. 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. Treat all sides of the reinforcing joist with a clear sealer and let it dry.