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Carton Forms 
for Residential 
& Commercial

At Carton Forms LLC, we manufacture a full range of corrugated carton void forms designed to meet engineering requirements and protect structural concrete in expansive clay soils. All products are hand-assembled in Denver,
Colorado, and built with the care and consistency
you would expect from a company with over 50 years of concrete void form experience.


Whether you’re working on structural slabs or walls with drilled piers, we can provide a variety of void products that will perform as designed and arrive when scheduled.

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FOOTING FORMS

Footing forms are corrugated paper forms that create engineered void space beneath structural footings and precast concrete panels, helping concrete foundations perform as intended in expansive soils. Each standard piece has sealed end caps that prevent the flow of concrete into the form.

MATTER OF FACTS:

  • Placed on reconditioned soils

  • Designed for non-bearing loads

  • Creates specific areas for soil expansion

  • Non-contineous placement

WALL FORMS

Wall forms are corrugated paper forms designed to create the required void space beneath structural walls and beams in expansive soil conditions. Built by hand for consistent performance, our wall forms can support liquid concrete pours to any specified height.

MATTER OF FACTS:

  • Corrugated paper form that creates void under concrete walls

  • Positioned between drilled piers

  • Forms a space between ground and concrete

  • Protects concrete structure from damaging soil pressures

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PLASTIC SOIL RETAINERS

Plastic Soil Retainers are used to prevent backfill soils from pushing into the void space along slab edges, walls, and grade beams. Made from durable, moisture-resistant polypropylene, these retainers maintain their shape, hold back lateral pressures, and helps preserve the formed void space.

MATTER OF FACTS:

  • Durable, moisture resistant plastic soil retainer sheets

  • Placed against the wall above and below the void material

  • Positioned at an angle when specified

  • Prevents backfilled soil pressure from pushing into the void space

PIER FORMS

Pier forms are hand-assembled, corrugated paper forms, made to correctly fit under pier caps and around the shape of drilled piers when at ground level or extending above ground. These products eliminate the uplifting pressures on piers, caused by underlying expansive soils.

MATTER OF FACTS:

  • Hand-made form that completely voids around pier/slab intersections

  • Creates a void space around the extended top of pier

  • Forms a round concrete extension through the form

  • Prevents uplift from expansive soils at piers and pilasters

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SLAB FORMS

Slab void forms are corrugated paper void forms that create a required voided space beneath structural slabs, protecting foundations from expansive soils. The hand- assembled interiors are designed to support engineered loads. The structural slab is shored by the forms until it is self-supporting.

MATTER OF FACTS:

  • A corrugated form that creates space between the ground and slab

  • Recommended under the entire elevated slab

  • Supports the structural slab until concrete sets

  • Protects damage to concrete from expansive soils

PROTECTION BOARD

Protection board is a 1/4" thick material placed on the surface of wide forms and all forms used under structural slabs. This product prevents punctures and pinpoint loading during the construction process and bridges gaps between paper forms, eliminating concrete from entering these spaces.

MATTER OF FACTS:

  • 1/4" thick protection cover sheet

  • Bridges small spaces between void forms

  • Eliminates concrete flow into unwanted areas

  • Protects the carton forms from foot traffic and point-loading

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LEDGE FORMS

Ledge forms provide rigid, consistent forming for elevation changes, at interior or exterior step-downs. Designed with a foam-core interior, hardboard at concrete face, OSB at nailing face, wrapped in thick polyethylene stretch film for several uses, when proper care is taken.

MATTER OF FACTS:

  • A hand-assembled form that creates vertical steps at tops of concrete walls

  • Available in a large variety of widths and heights

  • Multiple uses when care is taken

  • Compoments of thick plastic and OSB backing gives intend results

BEAM POCKET FORMS

Beam pocket forms create open areas within concrete walls or grade beams, allowing a specific place for the ends of load-bearing beams. Designed for easy installation and removal, these forms ensure clean block outs that minimizes grouting repairs.

MATTER OF FACTS:

  • Creates a formed pocket in the concrete wall

  • Reusable beam pocket form when care is taken

  • Made in a variety of sizes

  • Angled design allows for clean and easy removal

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DO YOU HAVE ANY QUESTIONS YOU WANT ANSWERED?

Have a project coming up? We can help you with the take off of products, quantities, installation options, and your next steps.

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