How to Build Deck Footings | Video

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    When building decks or other permanent structures, local building codes typically require the use of concrete footings. Before proceeding with your deck construction, consult with your local building department to determine requirements for the specific deck footings for your area.

    These requirements will include minimum diameter and minimum depth of the footings. Footings, typically, must extend below the frost line to prevent shifting during freeze-thaw cycles. Other code requirements may include the minimum height above ground and the type of deck hardware that must be used.

    QUIKRETE QUIK-Tube Forms are the best way to build new concrete footings for deck supports. QUIK-Tubes are available in four-foot lengths and come in diameters of 6, 8, 10 and 12 inches. These wax-coated cardboard tubes can be cut to length, to keep specific code requirements, using a handsaw, and after the concrete is poured, the forms can be leveled in-place.

    Once you have determined the minimum footing depth, based on the local building codes, dig the footing holes about six inches deeper than required and slightly larger than the QUIK-Tube diameter. Then, fill the bottom of the hole with six inches of QUIKRETE All-Purpose gravel, and compact the gravel with a 2 x 4 or wood post.

    Measure and mark the QUIK-Tube for the hole depth, and use a hand saw to cut the tube to length. Place the QUIK-Tube into the hole, and level the form. It is best to use the uncut end of the tube for the top of the footing, if possible. Decks and other permanent structures require deck supports and footings made from structural-strength concrete mix.

    QUIKRETE 5000 is recommended for footing applications because of its heavy-duty 5000 PSI strength. Add the QUIKRETE 5000 Concrete Mix to the form. After half of the form is filled, consolidate the concrete with a piece of re-bar or a shovel. This will eliminate voids and air pockets. Continue to add concrete, until the form is over-filled, slightly.

    Then, consolidate and level the surface. Immediately after leveling the surface, align and insert any deck hardware, and then, smooth the surface of the concrete. Allow the QUIKRETE 5000 to cure for 24 hours before constructing your deck or placing heavy weight on the footing. If standard QUIKRETE Concrete Mix was used, wait about 3 days to begin construction.

     

    Project Instructions

    When working with cement-based products, always wear eye protection and waterproof gloves.

    Step 1
    Ensure a solid deck footing. Decks and other permanent structures require deck supports and footings made from structural strength concrete mix.

    NOTE: it is important to check local building codes for construction requirements in your area; these requirements will include minimum diameter and minimum depth of the footings. Footings typically must extend below the frost line to prevent shifting during freeze-thaw cycles.

    Step 2
    Dig footing holes about 6 inches deeper than required.

    Step 3
    Fill the bottom of the hole with 6 inches of gravel and compact the gravel with a 2×4 or wood post.

    Step 4
    Measure and mark the QUIK-Tube for the hole depth and use a handsaw to cut the tube to length.

    Step 5
    Place the QUIK-Tube into the hole and level the form.

    TIP: it is best to use the uncut end of the tube for the top of the footing

    Step 6
    Add the concrete mix to the deck footings form. After half of the form is filled, consolidate the concrete with a piece of rebar or a shovel to eliminate voids and air pockets.

    Step 7
    Continue to add concrete until the form is overfilled slightly. Then consolidate and level the surface.

    Step 8
    Immediately after leveling the surface, align and inset any deck hardware and then smooth the surface of the concrete.

    Step 9
    Allow the concrete to cure for one day before constructing your deck or placing heavy weight on the new deck footings (if standard concrete mix was used, wait about 3 days to begin construction).

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