Trex Deck Framing Spacing

Most deck joists are centered 16 inches apart which is the maximum deck joist spacing for most low maintenance decking.

Trex deck framing spacing.

You also may have to install more stair stringers. When designing a new trex or composite deck the spacing between floor joists should be 12 inches on center. Those railings are not true 6 72 or 8 96 in length. Timbertech pro and timbertech edge boards must be a minimum of 1 8 to a maximum of 3 16 deck board spacing.

For timbertech azek decking it s recommended to have a minimum 1 8 to 1 4 side to side gap between deck boards. Both sizes have their pros and cons. If adding additional framing be sure to keep all boards level and in plane across the tops. On center means that the measurement should be taken from the center of a joist edge to the center of the next joist edge.

Build your dream deck with trex the world s best high performance composite decking brand. The eighth inch spacing provides for a safer surface for walking. Deck joist spacing should never exceed 16 on center with the exception of max deck boards which allow for maximum 24 on center. Most composite and pvc decking brands like trex and azek recommend a minimum joist spacing of 16 inches oc.

Trex transcend and select horizontal railings are made to be installed at maximum of 6 1 83 m or 8 2 44 m on center depending upon type of railing you choose. Trex signature railing and rod rail are made to be installed at maximum 6 or 8 clear span between posts. So when would you ever need to use 12 inches oc. 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.

Generally an acceptable gap between deck boards is between 1 8 inch and 1 4 inch. If you plan to install your decking at a 45 degree angle your joists may need to be 12 inches apart. Complete your yard with our framing railing lighting.