Poly Dike Containment Specifications

A modular Dike Wall System for Superior Protection from Above Ground Storage Tank Leaks

Poly Dike™ Wall Containment Systems

A Corrosion Resistant, Light Weight Spill Containment Dike

Summary: Modular, fiberglass wall system that maximizes corrosion protection and physical strength, while being light weight and easy to install.

Poly Dike walls are truncated triangular structures manufactured from either 3/16” (5mm) or ¼” (6mm) thick fiberglass based on wall height. Poly dike’s unique design allows both sides of the wall to share equally in load bearing.

Poly Dike’s modular design, coupled with wall heights that vary from 12” (30.5cm) to 36” (91.4cm), allow flexible use of surface area to meet area and capacity requirements. Note, when determining the system size, the width of the Poly Dike walls should be taken into account. The Poly Dike wall varies in width from 14” (35.6cm) to 24” (61cm) based on wall height. Poly Dike systems may be may be installed in several ways to cover a wide variety of applications. The three most common methods of installation are:

  • Sealed to a concrete pad
    • The customer or his selected contractor can seal the walls to a concrete pad along the base flange with gasket, caulk or fiberglass materials.
  • In conjunction with a floor coating
    • The customer or his selected contractor can seal the floor and the Poly Dike wall bases with a floor coating.
  • In conjunction with a fabric liner
    • A one-piece fabric liner may be used to cover the floor and Poly Dike walls. The liner must be large enough to go over the Poly Dike walls, so that it can be secured to the wall top with fiberglass wall clips. Securing the wall clips with self-tapping screws holds the liner in place. For aesthetics, the liner may be trimmed along the outside edge behind the wall clip.

To secure the system to the substrate, pre-drill holes every foot along both horizontal mounting flanges for insertion of fasteners (concrete fasteners for a concrete substrate, long spikes for other substrates).

Key Poly Dike Benefits:

  • No footers needed
  • Fast, clean installation
  • Superior corrosion resistance – even to high acid concentrations
  • Flexible use in cold, hot, or moist environments
  • No gapping or cracking
  • Easy to add to or relocate
  • Custom system design

Purpose: POLY DIKE is designed to be used as secondary containment for liquid and solid products that are considered to be harmful to the environment if leaked from their primary containment device. Applications include chemical storage tanks, hazardous material work areas, process waste treatment sites, rainwater runoff diking or similar applications.

Scope: This product specification covers materials, construction and workmanship, physical properties, chemical resistance and methods of testing.

Material: Premium fiberglass mat and industrial grade isophthalic or vinyl ester resin as manufactured by Ashland Chemical or equivalent are used in construction. A gel coat surface resin of equal chemical resistance, with the additive antimony trioxide for flame retardance and U.V. protection is included. The flame spread rating is Class II. Tested by ASTM E-84.

Structure: All wall and corner components are manufactured to strict industry standards for consistency and quality. Fiberglass reinforced construction is formed by combining resin with controlled amounts of fiberglass cloth, mat, chop and woven roving. All models include a chemically resistant surface barrier including surface glass or veil as may be necessary for the specific application.

Table 1: Properties Of Reinforced Fiberglass Laminates

Property at 73.4° F (23° C)

3/16” Thickness

1/4“ Thickness

Ultimate maximum tensile strength (PSI)



Flexural minimum strength (PSI)



Flexural minimum modules of elasticity(Tangent in PSI)



Operationg Temperature: Maximum operating temperature may not exceed 200 F, with excursions through
225 F.

Mounting Requirements: POLY DIKE wall and corner components are to be fastened to concrete with industrial fasteners as manufactured by Hilti or equivalent. Fastener diameters must be a minimum of 1/8”, with a minimum spacing of 12” between fasteners. Adhesion to a concrete floor to be a minimum 3/16” thickness and 4” wide.

Component Joining: Finished joining of components to be built up in successive layers, to be as strong as the pieces being joined and as crevice-free as is commercially feasible. Minimum joint lamination width is 2”. Successive layers must increase in size and overlap each other until a thickness equal to the component is achieved.

Quality Assurance: POLY DIKE is manufactured and tested according to industry standards PS 15-69 and 41-GP-22 Canadian and SPI/MTI Quality Assurance Report for FRP Corrosion resistance Equipment.

Table 2: Physical Specifications

MODEL #Wall Section
Wall Section
Base Width
Wall Section
Wall Section
Wall Section


PD 1212”14”3/16”20’90 LBS.22 LBS.
PD 2424”20”3/16”20’150 LBS.40 LBS.
PD 3030”24”1/4“20’220 LBS.50 LBS.

Warranty: POLY DIKE Systems are warranted against defects in workmanship and materials for a period of one year from date of purchase. Repair or replacement is at the discretion of the manufacturer. Customer or third party damage is excluded from warranty coverage.

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Stow, Ohio 44224

234.678.9020 | 800.275.3453

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containment systems – Stow,

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