How Many Footing Do You Need For Your Deck?
The answer depends on the size and shape of your deck, the size of your deck footings, and the size of your beams. The larger the beam and footing size, the fewer footings that are required. For most situations, you will want to place footings and posts less than 8' apart. If you are planning on installing a hot tub or porch on top of your deck, you will usually need more footings and posts to support the additional loads. Freestanding decks that are not attached to the house with a ledger board will require an additional beam and row of footings. Decks with lots of angles may also require additional footings. Use the Decks.com footing and beam calculator to test your design.
Cutting a Concrete Pad
Learn how to use a concrete saw to cut a hole in a patio slab to install a deck footing.
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.
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 Install Wood Deck Support Posts
Installing wood deck posts on top of concrete footings will provide additional support for your deck. We recommend using 6x6 posts due to their strength. Learn how install them at Decks.com.
How to Build a Multi-Level Deck
Multi-level decks are very popular. Learn how to build a deck that steps up or down using shared posts and footing connections.
More Helpful Resources
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
Can I use pier blocks?
Our inspector explains the pros and cons of using pier blocks for deck foundations.
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.
Retaining Walls
Avoid problems related to digging deck footings near retaining walls. Learn some tips from the pros for how to handle these difficult situations.
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 Blocking: Spacing, Methods, and How to Install Like a Pro
Learn the importance of deck blocking and how to install it when building your deck.
How to Build a Ground Level Deck
Adding a ground level or floating deck to your home may be the perfect addition to your outdoor space. Learn how to build a ground level deck at Decks.com.
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