# How far can a 2×6 deck joist span?

## How far can a 2×6 deck joist span?

2-grade 2×6 joists can span up to 10 feet 9 inches from beam to beam when spaced the standard 16 inches apart with a maximum live load of 30 inches per square foot. In comparison, No. -1 grade lumber can span slightly further to 10 feet 11 inches under the same parameters.

Can you use 2×6 for deck joists?

You can use 2×6 as deck joists if the deck is low enough to the ground as not to require guard railing. When using S-P-F 2×6 deck joists, the span must not be greater than 9’0″ (2.73m) with joists at 16″ o.c. (400mm), and 9’10” (3.01m)with spacing at 12″ (300mm).

What size joists do you use for decking?

Commonly used joist sizes are 2-by-6, 2-by-8 and 2-by-10. For example, when you space joists 16″ apart — which is standard for residential decks — a deck spanning 9 1/2′ would require 2-by-6 joists, a 13′ deck would need 2-by-8 joists and a 16′ deck calls for 2-by-10 joists.

### What is the maximum span for deck joists?

Depending on the size of the deck itself, whether your joists are spaced either 12 inches or 16 inches from the center, and the framing materials and size of deck boards used, deck joist spans may vary. With this in mind, the joist span can range between 6 ft, 10 inches, to 18 ft.

Can you use 2×6 for deck boards?

Wood decking is commonly available in 2×6, 2×4, 5/4 x 6, and 5/4 x 4 profiles. 5/4 x 4 and 5/4 x 6 is produced specifically for decking and can be found milled with a radius or bullnose edge. 2×4 and 2×6 are thicker and stronger, but they also tend to be more expensive than a 5/4 board of the same width.

Should I use 2×4 or 2×6 for deck?

Most builders stick to using a minimum of 2x6s for deck floor joists. If you want to add guardrails and stairs, you need at least 2x10s. 2×4 and 2×6 joists are ideal for ground-level decks without guards.

## What is the joist spacing for composite decking?

16 inches OC
Most composite and PVC decking brands, like Trex and Azek, recommend a maximum joist spacing of 16 inches OC.

What is code for deck joist spacing?

16″
Most decks use 16″ on center spacing for joists. Most decking is not strong enough to support wider spans than 16″. Some builders reduce joist spacing to 12″ on center to strengthen the deck frame or to increase maximum allowable joist spans.

How long can a 2×6 floor joist span?

The maximum distance a 2×6 can span, according to the 2018 IRC, for a floor joist, is 12′-6”, ceiling joist 20′-8”, rafter 18′-0”, deck board 24”, deck joist 9′-11”, deck beam 8′-3”, and 6′-1” as for header. Always check the codes for determining factors or consult a Structural Engineer.

### How much space should be between 2×6 deck boards?

The Sweet Spot – Most people agree that 3/16” is a good gap between boards. Going more than a ¼” may get a little too wide. The width of a nail head is just about right. Treated Lumber – Usually treated lumber will have some shrinkage so you can butt the boards almost right against each other during installation.

Do you leave a gap between decking boards?

Determining Deck Board Spacing When using wood decking, you want a gap of at least 1/8 of an inch after your decking has dried out. If you’re using decking that’s already been dried out, you can leave a 1/8-inch gap when you install. Many decks will use “green” wood, or wood that hasn’t been dried down or kiln dried.

Do you use wood joists with composite decking?

The usual type of material used for joists is wood, especially in residential settings. Pines, oaks, and cedars are some of the most used types of wood for flooring frameworks. Aside from wood, you can also use composite decking for the frames. Height of the Frame off Ground.

## How much support do you need for composite decking?

Joists for composite decks Framing for a composite deck isn’t the same as a wooden deck. The plastic materials in composite decking require strict support to avoid bowing or warping when heated by the sun. The required joist span is 16-inches on centre, or 12-inches on centre when running boards at a 45-degree angle.

How far apart should joists be for composite decking?

What size joist do I need?

Spacing (distance apart) of joists – centres

Size of joist mm 400mm 600mm
38 x 195 3.72 3.06
38 x 220 4.16 3.42
38 x 235 4.43 3.64
47 x 97 1.92 1.46

### How do you reinforce 2×6 floor joists?

If the floor is bouncy but the joists are not sagging, the simplest fix is to reinforce the joists by installing additional joists adjacent to the original ones. Called “sistering,” this is done from beneath the floor in the crawl space. New two-by-six joists are cut to fit snugly beside the old ones.

How much weight can a 2×6 hold per foot?

A 2×6 will hold 4 pounds per linear foot horizontally and 53 pounds per linear foot on its edge. Vertically, a 2×6 will hold between 662 and 998 pounds or over 7000 pounds when in a blocked and sheathed wall. However, many factors affect the amount of weight a 2×6 will hold.

What size joists should I use for decking?

Types and Sizes of Decking Screw. Deck Screw is a crucial and essential part of decking.

• Things to Consider Before Choosing Deck Screw. One of the biggest mistakes people often make when building a deck is to save money with low-quality screws.
• Conclusion.
• ## What is the proper joist size for deck framing?

– CCA (chromated copper arsenate) – ACQ (alkaline copper quaternary) – MCA (mercury copper arsenate)

Can you put flooring over 2×6 deck?

Can I Install Tiles on Composite or Wood Decks? Installing tile over a standard deck frame in an exterior environment is a recipe for trouble. The combination of tile, grout, wood and water in an environment with temperature and moisture fluctuations makes it nearly impossible to get the long-term performance that most occupants expect.

Can you use 2×6 for deck flooring?

The larger the deck, the larger the joists. 2×6 joists should only be used on ground-level decks that do not require, and will not provide for, any guards. Besides, what is the maximum span for a 2×6 floor joist?