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

Water in deck footing holes

Find out what to do if your deck footing holes fill up with water.

Concrete

Working With Concrete

Learn tips from the pros on how to mix and pour concrete for deck footings.

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 Beams

How to Install Deck Girder, Cantilever or Drop Beams

Learn about the pros and cons of installing a cantilever, girder or drop beam to support your deck joists. This method allows for a notched post-to-beam connection.

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.

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

Can I use pier blocks?

Our inspector explains the pros and cons of using pier blocks for deck foundations.

Footing Installation

Layout Deck Foundations

Learn how to lay out your deck footings accurately using triangulation with our step-by-step instructions.

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 Deck Post Wraps and Sleeves

Learn how to install trim or post sleeves over your pressure-treated support posts for a cleaner finish and to protect the material from checking.

Deck Support Beams

How to Nail a Deck Beam

Learn how to nail a beam together. How many nails should you use? What type of nails should you use?

Get more helpful resources delivered right to your inbox

Explore Articles by Topic