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.

Cutting a Concrete Pad
Learn how to use a concrete saw to cut a hole in a patio slab to install a deck footing.
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.
Installing footings on a sloped yard
Our inspector explains how to install concrete deck footings on uneven ground.
How to Decorate Deck Support Columns
Browse some examples of decorative deck support posts for tall decks.
How to Angle Corners and Joists
Learn how to frame a deck with angled or clipped 45-degree corners using a cantilever beam.
Building a Round or Curved Deck
Explore the endless design possibilities of building a round or curved deck. This guide covers all essential aspects, including substructure design, material choices, installation timeframes, and cost considerations, ensuring you achieve a structurally sound and visually stunning deck.
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Railings
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Planning
Learn about permits and working with contractors

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Build a covered deck to enjoy all seasons

Ledger
Proper attachment techniques

Care
Maintain your deck to maintain your investment

Materials
An overview on water drainage, benches, planters and lights
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 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.
Prevent Deck Sinking
Sinking deck footings can lead to serious problems. Learn what can cause concrete footings to sink. Properly installed footings will resist sinking.
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.
Building a Balcony Deck
Learn information about balcony decks that use cantilevered joists that attach to house floor truss systems.
How to Use Steel Metal Deck Support Posts and Columns
Steel deck posts with base plates can be used as an alternative to wood posts for supporting your deck.
Explore Articles by Topic

Footings
Information related to installing frost footings for decks

Framing
Learn structural framing methods

Decking
Learn about wood and composite decking materials

Stairs
An in-depth look at the complex issue of how to build stairs

Railings
How to install guardrails and handrails to meet IRC code

Features
An overview on water drainage, benches, planters and lights

Design
The basics of deck design

Planning
Learn about permits and working with contractors

Porches & Patios
Build a covered deck to enjoy all seasons

Ledger
Proper attachment techniques

Care
Maintain your deck to maintain your investment

Materials
An overview on water drainage, benches, planters and lights