## How long can you cantilever a deck?

Table of Contents

The American Wood Council states that cantilevers are limited to 1/4 the span of the joists. Joist Spacing (o.c.) Maximum allowable overhang cannot exceed 1/4 of the actual main span.

### How far can decking boards cantilever?

How Far Can Deck Boards Overhang the Joists? No matter what material you select for your decking, the overhang should never extend more than the ⅓ the width of the board. The greater the distance from the fasteners and support, the more likely the ends will bend or splay.

#### How far can deck beam cantilever?

*Beams may cantilever at each end up to ¼ of the of the actual beam span. For example, a 16′ beam span can cantilever a maximum of 4′.

**How far can a 2×8 cantilever on a deck?**

A Wood Council document (here) gives some very high-end detail about decks, but the take-away as far as cantilevers go is almost exactly the same: 400mm/16” for 2×6 or 2×8 lumber, and 600mm/24” for 2×10 or 2×12 lumber.

**How far can a bearer cantilever?**

Overhangs. For overhanging joists, Blocking and End Trimmer are required as per diagram. The maximum permissible overhang is 30% of the backspan.

## How long should deck overhang?

The edge of decking should never overhang more than one-third of the decking material. For your standard 5.5” decking, that is 1 ¾” overhang.

### How far should deck boards overhang?

Allow for Sufficient Overhang of Decking A one to two inch overhang beyond the outer fascia board is sufficient. This means the installed deck boards should have at least 1.75 to 2.75” overhang before the fascia is installed.

#### How far can a deck beam cantilever over a post?

The American Wood Council’s Wood Frame Construction Manual states that beams can generally cantilever up to 1/4 their span over a post.

**How far can a 2×10 beam span without support?**

How Far Can a 2×10 Beam or Header Span? A 2×10 beam – made up of two 2x10s nailed together – can span up to 11′ without support beneath a deck that is 4′ wide. For a more normal-sized deck, the same beam can span 8′, supporting a deck that is 8′ wide. You can also triple a 2×10 beam.

**What is a cantilever span?**

A simple cantilever span is formed by two cantilever arms extending from opposite sides of an obstacle to be crossed, meeting at the centre.

## How far can you cantilever 2×6?

Looking at the table below, we see that 2×6 floor joists can be cantilevered up to 2 feet and 6 inches (2′-6″) when the joists are spaced 16″ apart.

### What is the maximum cantilever you can use for a deck?

The lower number is the maximum cantilever you can use. Example: A deck with a beam located 12 ft. 6 in. from the ledger, framed with 2×10 joists at 16 in. on center. Check 1: The allowable overhang/maximum cantilever is 3 ft 5 in. per the DCA 6 table and 3 ft. 6 in. per the 2018 IRC table. Check 2: 12 ft. 6 in. / 4 = 3 ft. 1 in.

#### What is the meaning of a cantilever deck?

A cantilever deck is simply a deck with joists extending past the beam creating a cantilever or overhanging end on the deck’s exterior. The decision to have your deck cantilevered often comes with the wish to extend an existing deck.

**How far can a deck joist cantilever overhang?**

Allow for Sufficient Overhang of Decking A one to two inch overhang beyond the outer fascia board is sufficient. This means the installed deck boards should have at least 1.75 to 2.75” overhang before the fascia is installed. Considering this, how far can you cantilever a 2×6 deck joist?

**What is the maximum span for a cantilever roof?**

The American Wood Council states that cantilevers are limited to 1/4 the span of the joists. Maximum allowable overhang cannot exceed 1/4 of the actual main span.