##### Asked by: Lucky Danieli

asked in category: General Last Updated: 21st June, 2020# How far can you cantilever a floor joist?

**Joist Cantilevers**

**cantilevers can**extend up to

**one**-fourth the backspan of the

**joist**. This means that

**joists**, such as southern pine 2x10s at 16 inches on-center, spanning 12 feet are allowed to

**cantilever**up to an additional 3 feet (see illustration, below).

Similarly, you may ask, how far can you cantilever a floor truss?

Many building departments limit **joist cantilevers** to 24" maximum. **You** must use at least five framing nails to attach the rim **joist** to the ends of your joists. The American Wood Council states that **cantilevers** are limited to 1/4 the span of the joists.

Also Know, how far can you cantilever a 2x6 joist? Looking at the table below, **we** see that **2x6** floor **joists can** be cantilevered up to 2 feet and 6 inches (2'-6") when the **joists** are spaced 16" apart.

In this way, how far can you cantilever a 2x8 joist?

**If** the code span tables allow a **2x8** to span 12 feet, then the **cantilever can** be 3 feet.

How far can you cantilever a house?

As small as 2 feet: Bump outs may extend as **far** as 10 to 15 feet from the **house**, but they **can** also be tiny "pop-outs" that are no deeper than 2 feet. **Cantilevers**: Small bump outs often are cantilevered (unsupported by posts) from the **house**. This is typically limited to about 2 feet in depth.