Perform Guard® EPS Geofoam


Perform Guard® EPS Geofoam is used in ground fill applications where a lightweight fill material is required to reduce stresses on underlying soils. It has been used in applications worldwide for over 30 years. Perform Guard EPS Geofoam is a cellular plastic material that is strong but has a very low density - 1 % of traditional earth materials. It is produced in block form and is easily positioned at the work site. Perform Guard EPS Geofoam is unaffected by normally occurring weather at the time of installation and will retain its physical properties under engineered conditions of use.

Traditional earth materials are heavy and can cause settlement or instability of underlying soils. Other fill materials such as foamed concrete, waste tires, soil, wood chips, wood fiber, etc., have higher densities, are variable in their makeup and are not engineered due to field execution variables. They also have limitations in handling and can be weather sensitive, thus requiring staged construction and/or pre-loading, surcharging and draining, etc.

Project: H3-Kaneohe Interchange, vehicle emergency escape ramp lightweight solution Engineer : Clayton Mimura and Stacey A, Kimura Engineering Firm . Parsons, Brinckerhoff, Quade and Douglas, Inc., USA Contractor: E.E. Black/SCI Joint Venture AFM Plant: Pacific Allied. Products, Ltd., Honolulu, Hawaii Comments on Project: Geofoam's light weight and block configuration allow for efficient placement of material.

Product Features

  • Super Lightweight Fill - 1 lb. per cu. ff.
  • High Strength to Density Ratio
  • Predictable Material Behavior
  • Manufactured to ASTM Standards
  • Insect Resistant Perform Guard EPS
  • Various Large Block Sizes
  • No Leachates
  • Inert in Long Term Burial Conditions
  • Volume Stability
  • Easily Shaped in Field and Plant
  • Available Throughout North America

Tested against termites and carpenter ants. Manufacturer has list of specific species on file.

(Above) Project: Hanging Lakes Tunnel, Glenwood Canyonon Interstate 1-70, Glenwood Springs, CO Engineering Firm: Parsons, Brinckerhoff, Quade and Douglas, Inc., USA Contractor: Hanging Lake Joint Venture AFM Plant: Advance Foam Plastics, Inc., Denver, CO Comments on Project: Lightweightfill on ventilation facility.

(Above) Project: Stave River Bridge, Highway 7, British Columbia Department of Highways and Transportation Engineering Firm: Ker, Priestmon & Associates Contractor: Neel-co Construction Inc. AFM Plant: Plasti-Fab, Delta, British Columbia, Canada Comments on Project: Lightweight fill material at relocation of Highway 7 crossing over Stave River, British Columbia.


Perform Guard EPS Ground Stabilization Blocks will be provided in ASTM or CGSB* type, size and thickness as shown in design drawings and specifications, and as approved in manufacturer's shop drawings. Selection of appropriate density material should be determined by the project engineer. Please refer to AFM's Spec-Data for our complete specifications and guidelines.

Canadian Government Standards Board.

Project: City of Issaquah, WA, 56th Street - street and bridge improvement Engineer: Brandon Cole Engineering Firm: City of Issaquah Public Works Department Contractor: R.W. Scott AFM Plant: Insulfoom, Kent, WA Comments on Project: Geofoam approach fill EPS block placement & subgrade ready to receive asphalt paving.

Common Geofoam Applications

Perform EPS Geofoam is commonly used in the following applications . Other engineered applications may also be appropriate.

Transportation Earth Works

  • Embankments
  • Side-hill fill
  • Approach fill (bridge abutments)
  • General fill (roadways, parking, etc.)
  • Median and sound barriers


  • Landscape
  • Plaza decks
  • Bermed structures


  • Structural fill (foundations, etc,)
  • Earth retaining structures

General Earth Works

  • Flood control levees
  • Dikes/Berms

Job Site Efficiency

Geofoam maximizes onsite installation efficiency. Material can arrive at the job site prefabricated and ready to place. It is easily 'Inventoried and handled. Installation is not delayed by weather.

(Above) Project: Carousel Center, Syracuse, New York Engineering Firm: John Stopen Engineering Partnership Contractor: The Pyramid Company AFM Plant: Thermal Foams/Syracuse, Inc., Cicero, NY Comments on Project: Geofoam reduces lateral pressure on concrete retaining wall.

(Below) Project: Slope stabilization on Route 23A, Jewett, New York Engineedng Firm: Geotechnical Engineering Bureau, New York State Department of Transportation Contractor: Conastoto Constructors, Inc. AFM Plant: Thermal Foams/Syracuse, Inc., Cicero, NY Comments on Project: Winter weather conditions do not adversely affect construction with Geofoam.

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