Products

SQUARE FOOT® gives concrete footings increased stability, greater bearing capacity, high tensile strength and more.

 What is SQUARE FOOT®?

Square Foot SF22It's plastic -- it's bright orange -- it's square. It's a concrete footing form that's revolutionizing the way do-it-yourselfers and contractors construct their footings. Remember when you could expect three days just to get your footings in? Those days are gone. You can install your footings in just one to three hours when you use SQUARE FOOT®.

 How does SQUARE FOOT® work?

Square Foot SF22The SQUARE FOOT® has a square base that tapers up to a conical shape that allows for Sonotube® brand forms and other standard fiber construction tube forms to be attached to the top of the footing form. The footing form has a uniform height, each model with a different number of flanges at the top to accommodate the different sized construction tubes. The construction tube is attached to the conical section of the footing form using four 3/4“- 1“(1.9cm - 2.54cm) wood screws. It is then set into the ground on undisturbed soil or 4“- 6“(10.16cm - 15.24cm) compacted crushed stone. The footing form is then plumbed, backfilled and is filled with concrete making a monolithic pier and footing unit. The construction tube and plastic footing form remain in place after the concrete is cured Quick Installation Instructions, Installation Video.

 SQUARE FOOT® Product Models

  • SF22 is designed to work in conjunction with 8“ and 10“ construction tubes (6 flanges).
    View SF22 Product Spec
  • SF28 is designed to work in conjunction with 8“, 10“, and 12“ construction tubes (9 flanges).
    View SF28 Product Spec
  • SF32 is designed to work in conjunction with 12“, 14“, 16“, and 18“ construction tubes (5 flanges).
    View SF32 Product Spec
Square Foot product images

 Product Warranty Information



Model SF 22
Square Foot SF22
  • Dimensions:
    22" x 16.6" (56cm x 42cm)
  • Concrete Required:
    60lb (22kg) bags: 4
    80lb (30kg) bags: 3
  • Concrete Volume:
    2.00ft3(0.56m3, 0.07yd3)
  • Concrete Type:
    Minimum 3000 PSI
  • Fits Tube Sizes:
    8“ and 10“ construction tubes
  • SF22 Product Spec
Model SF 28
Square Foot SF28
  • Dimensions:
    28" x 20" (70cm x 51cm)
  • Concrete Required:
    60lb (22kg) bags: 9
    80lb (30kg) bags: 7
  • Concrete Volume:
    4.50ft3(0.13m3, 0.17yd3)
  • Concrete Type:
    Minimum 3000 PSI
  • Fits Tube Sizes:
    8“, 10“, and 12“ construction tubes
  • SF28 Product Spec
Model SF 32
Square Foot SF32
  • Dimensions:
    32" x 21.1" (81cm x 54cm)
  • Concrete Required:
    60lb (22kg) bags: 14
    80lb (30kg) bags: 10.5
  • Concrete Volume:
    7.00ft3(0.20m3, 0.26yd3)
  • Concrete Type:
    Minimum 3000 PSI
  • Fits Tube Sizes:
    12“, 14“, 16“, and 18“ construction tubes
  • SF32 Product Spec