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How Many Footing Do You Need For Your Deck?

The answer depends on the size and shape of your deck, the size of your 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.


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

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Can I reuse existing footings

Our inspector discusses the topic of reusing footings for a new deck.

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Digging Foundations

Learn how to hand dig or mechanically dig your deck footings with step-by-step instructions. Learn what to do if you hit a rock.

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

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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.

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Explore Articles by Topic

Create a free account and get instant & exclusive access to all that Decks.com has to offer:

Checkmark 1,000+ How-To articles
Checkmark 80+ Free Deck Plans
Checkmark Deck Planning Calculators
Checkmark Free & Simple Deck Design Tool
Footing Installation

How Many Footing Do You Need For Your Deck?

The answer depends on the size and shape of your deck, the size of your 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.


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.

Footing Installation

Digging Foundations

Learn how to hand dig or mechanically dig your deck footings with step-by-step instructions. Learn what to do if you hit a rock.

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

Engineered Deck Beam

Use treated engineered deck beams for long spans with fewer posts and footings. Engineered beams can be designed and specially ordered from your lumberyard.

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

More Helpful Resources