Loading

Using Rebar for Concrete Deck Footings

Plain concrete deck foundations without rebar are acceptable under the minimum standards of construction established in the International Residential Code. However, placing reinforcing steel within footings is a relatively easy and inexpensive practice that can provide increased performance. Footings with large bearing areas or unstable soil can benefit from adding rebar to prevent cracking. 

When rebar is placed within a footing, it should be completely encased in concrete by a minimum of 3 inches on all sides. When rebar is allowed to project out of the footings, it is susceptible to more rapid corrosion. Over time, rebar allowed to corrode into the footing can weaken the footing, creating areas subject to cracking.

Rebar In Deck Footing
PinterestSave

Popular Footings Articles
Concrete

Cutting a Concrete Pad

Learn how to use a concrete saw to cut a hole in a patio slab to install a deck footing.

Footing Installation

Footing Size

You don’t need to be an engineer to figure out what size footings your new deck will need to safely support it. Everything you need to know is right here.

Concrete

Protecting From Collapse

Learn how to use cardboard sonotubes and hole covers to protect your deck footing holes from caving in and flooding before pouring concrete.

Next Step: Framing Articles
Deck Support Columns

How to Decorate Deck Support Columns

Browse some examples of decorative deck support posts for tall decks.

Deck Support Columns

How to Use Shared Load Deck Support Posts

Learn how to support an upper and lower deck using one support post and a larger footing by bolting the lower deck into the side of the post.

Deck Framing

Building Your Deck For A Hot Tub

Learn how to build a deck to properly support a hot tub or spa. Hot tubs are very heavy. Never place a hot tub on a deck that wasn't designed for the additional load.

Get more helpful resources delivered right to your inbox

Explore Articles by Topic

Popular Footings Articles
Footing Installation

How many footings do I need?

Learn how to determine the number of footings and support posts you need for your deck when designing your deck frame.

Footing Installation

Deck Footing Depth

Find out how deep you need to dig your footings in your area. Look at our U.S. map of extreme frost penetration.

Footing Types

Buried Post

Learn how to install a concrete deck footing with a buried treated support post as an alternative to a solid pier foundation.

Next Step: Framing Articles
Deck Framing

Why is Joist Protection so Important for Your Deck?

If you’ve ever seen a piece of wood left out in the weather for any period of time, you know what happens: decay. Whether through wet rot, insect damage, or mildew, the fibers begin to break down.

Deck Support Columns

How to Install Concrete Support Deck Posts & Columns

Learn how to install concrete deck piers to support your deck frame. Use cardboard form tubes to extend your footings above grade.

Deck Framing

How To Build an Octagon Deck

Learn how to build an octagon-shaped deck. Octagon decks can be used as the floor for a gazebo roof.

Get more helpful resources delivered right to your inbox

Explore Articles by Topic