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GroundWorx Ultra ESD Static Conductive Heavy Duty 100% Solids Epoxy Primer | ANSI/ESD S20.20-2014

GroundWorx Ultra (Formerly HB-97.2) ESD Conductive Epoxy Primer is a two-component 100% solids high build epoxy resin moisture tolerant coating system that can be applied as a clear or pigmented floor primer or coating. It is designed specifically to be used as an ESD conductive primer prior to application of the GroundWorx Ultra ESD Urethane Topcoat as a heavy wear ESD protective coating system in a wide variety of heavy duty commercial and industrial environments where the harmful effects of electrostatic discharge must be avoided.

The GroundWorx Ultra epoxy when used with the GroundWorx Ultra Urethane Conductive topcoat has an electrical resistance of <1.0 x 10e6 ohms limiting Static Charge Generation to <15 volt.  When used with the Dissipative version of the GroundWorx Ultra Urethane topcoat the system has an has an electrical resistance of >1.0 x 10e6 ohms and <1.0 x 10e9 ohms limiting Static Charge Generation to <15 volt.

When used together, the GroundWorx Ultra ESD Urethane Topcoat  and GroundWorx Ultra ESD Epoxy Primer Coat complete an ESD protection, static control system that can be used where significant commercial and industrial forklift, pallet jack, heavy cart and foot traffic is present at less than $4.00/sq’ material cost (delivered).

PRIMER:  For applying directly to VCT, ceramic tile, vinyl, linoleum or asbestos mastics, cutback and carpet glues with minimal preparation consider our Perfect Primer Sealer.

The GroundWorx Ultra ESD system meets ESD Association (ESDA) standards and is compliant with ANSI/ESD S20.20-2014 recommendations for grounded static-control flooring.

Recommended for use on concrete, wood and old VCT floors.  Comes in a gloss finish.  The GroundWorx Ultra ESD Primer is moisture tolerant and can be applied to a floor <75% relative humidity.  The GroundWorx Ultra ESD system offers easy maintenance and never requires waxing or buffing.

Available in a 3 gallon kit and 8 standard colors.  Custom coloring available on special order basis to meet your specific color matching requirements.

Recommended minimum coverage rate for GroundWorx Ultra Epoxy Primer is 160 sq’/gallon (10 mils thick) for great performance up to as much as 20 mils thick in one coat for extremely heavy traffic systems.

We also offer the option to include a Two-inch-wide copper grounding strip for grounding to earth grounds. Copper is 1.4 mil thickness (2.6 mil thickness with the conductive adhesive backing).  Recommend at least 1 grounding strip every 1,000 sq’ of project surface area.   Copper grounding strip to be applied OVER the GroundWorx Ultra Epoxy Primer/Basecoat BEFORE application of the GroundWorx Ultra Urethane Topcoat See the guide:  HOW TO GROUND ESD COATINGS

For more information on anti-static floor systems, see our video library.

Where is the GroundWorx Ultra ESD Conductive Epoxy Primer used?

  • Electronics manufacturing & assembly areas
  • Research & Development
  • Computer storage and warehousing areas
  • Component Testing and Repair
  • Warehouse Areas
  • For Heavy Duty Forklift and Pallet Jack Traffic Areas

Why GroundWorx Ultra ESD Primer?

  • Static dissipative or conductive high build epoxy electrical protection when used with the GroundWorx Ultra ESD Urethane Topcoat, which comes in either dissipative >1.0 x 10e6 ohms or conductive <1.0 x 10e6 ohms electrical resistance, limiting Static Charge Generation to <15 volts
  • Great for high traffic, high wear commercial & industrial applications as high build 14 mil ESD system at <$4.00/sq’ material cost
  • Great for high traffic, high wear commercial & industrial applications
  • Use on Concrete, Wood and old VCT surfaces
  • Moisture tolerant primer
  • Excellent adhesion 350 psi
  • 100% solids, 0 g/L voc
  • Conforms to ESDA, ANSI standard S20.20-2014
  • Gloss sheen
  • 8 standard colors
  • Full range of custom Colors available on special request


Solids 100% solids ASTM D2369
VOC  0 g/L
Colors Off white, light gray, medium gray, dark gray, Umber , light blue, beige, black and custom colors special order
Recommended Film Thickness 10 mils dry when used as primer with GroundWorx Ultra ESD Urethane Topcoat
Coverage per Gallon 160 sq’/gal
Packaging  3 gallon kit
Surfaces applied to Concrete, wood, old VCT floors
Shelf Life 1 year in unopened container
Finish Gloss sheen
Flash Point > 215°F (102°C) ASTM 3278
Mixed Viscosity 400-700 cps D2196
Abrasion Resistance 75 mg ASTM D4060
Coefficient of Friction 0.55 – 0.65 ASTM D2047
Tensile Strength 12,000 psi ASTM D2370
Adhesion to Concrete 350 psi concrete failure ASTM D4541
Impact 40 in/lbs direct & reverse ASTM D2794
Hardness 2H ASTMD3363


(at 75°F or 25°C and 50% RH)

Working Time 20-40 minutes
To touch 4-6 hours
Fully dry 6-10 hours
Full cure 7 days

APPLICATION TEMPERATURE: 65°F (18°C) and 90°F (32°C) and below 75% relative humidity


RODUCT STORAGE:   Materials should be stored in original un-opened containers indoors between 65°F (18°C) and 90°F (32°C) and at or below 75% RH.

GENERAL SURFACE PREPARATION:  All surfaces must be sound, dry, clean and free of oil, grease, dirt, mildew, form release agents, curing compounds, loose and flaking paint and other foreign substances.  If the concrete has been treated or sealed, proceed with complete removal process Surface dirt, grease, oil, and contaminates must be removed by detergent scrubbing and rinsing with clean water. Shot blasting or grinding the surface is the preferred method of preparation. The success of industrial diamond grinding as a concrete preparation method will vary depending on technique and the hardness of the concrete

Grounding Required for the GroundWorx Ultra Epoxy System:  We offer the option to include with the GroundWorx Ultra Epoxy, a 1/2 inch-wide copper grounding strip for grounding to earth grounds. Copper is 1.4 mil thickness (2.6 mil thickness with the conductive adhesive backing).  Recommend at least 1 grounding strip every 1,000 sq’ of project surface area.  Apply the copper grounding strip ON TOP of the epoxy before the GroundWorx Ultra Urethane is applied.

MOISTURE AND VAPOR/CONTAMINATION Moisture and vapor transmission rates are dynamic in nature and may change over time. Initial testing does not guarantee future results. Staticworx requires that all concrete slabs are tested using in-situ probes per ASTM F-2170 and with calcium chloride tests per ASTM F-1869. If the relative humidity of the concrete substrate is over 75% (per ASTM F-2170) or 3lbs/1,000ft²/24 hours (ASTM F-1869), contact Staticworx for a moisture mitigation recommendation prior to product use. If there is no known vapor barrier or the vapor barrier is inadequate, there is an elevated risk of bond failure. Other factors including the migration of oils, chemicals, excessive salts or Alkali Silica Reaction (ASR) from the concrete may also elevate the risk of adhesion difficulties. Contact Staticworx for approved mitigation treatments.

MIXING INSTRUCTIONS: Mix ratio is 2 Parts A to 1 part B by volume. A pint of coloring agent is recommended per every 3 gallon mix. The color pack should be added and mixed in homogenously prior to adding the Part B hardener. Mix all components together for 2-3 minutes with a Jiffy® ES mix blade attached to a slow speed drill. Mix only enough material at one time that can be applied without exceeding the pot life. Note: Once this material is mixed, it can’t be resealed for later use. Improper mixing may result in product failure. For best mixing results and proper blending of parts A and B, recommend a Jiffy Mixer style drill mixer.

TEMPERATURE AND HUMIDITY During the application and curing of the coating, the substrate temperature, material temperature, and room conditions must be maintained between 65°F (18°C) and 95°F (32°C). Relative Humidity (RH) should be limited to 30- 80%. DO NOT apply coatings unless the surface temperature is more than five degrees over the dew point.

SPREADING RATE:  Apply at approx. 160 sq ft/gal. When HB-97.2 ESD primer is applied, surface irregularities and porosity in the concrete may affect the coverage rate. Be sure to plan accordingly as there may be a need for extra material to provide proper coverage. Material applied too heavily may blister or can remain soft during curing. Too little material may produce dry spots and a non-uniform look. The best practice is to measure and grid the floor to be sure of proper application rate.

DRYING TIME: Unless top coating, allow HB-97.2 primer to dry for a minimum of 24 hours after application at 75°F (24°C) and 50% RH before opening the floor to light traffic, allow more time for low temperatures and higher humidity or for heavier traffic. Full coating properties may take up to 7 days to develop.

PRODUCT APPLICATION:  Apply GroundWorx Ultra ESD primer at a rate of 10 mils (480ft² per pail) to the flooring surface using a notched or flat squeegee depending on the desired thickness. Allowing the material to sit in the pail for longer than 5 minutes will result in an increase of viscosity and reduced leveling properties. Back roll and evenly spread the wet coating using a 1/4 – 3/16 inch nap non-shed professional grade roller. Care should be taken to overlap and cross lap, but not over roll the coating introducing air to the surface. HB-97.2 ESD primer must be top coated within 24 hours (at 70-75°F, 30% RH) in order to avoid sanding. If the re-coat window has expired, the prior cured coating surface must be sanded with 100 grit sand paper or sanding screen installed on a swing-type floor buffer. Sand to a uniform dulled surface. Remove all sanding debris with a vacuum and damp mop. Scrub with detergent and rinse with clean water. Surface must be dry before coating.

CLEANUP: Clean hands and tools immediately with warm, soapy water.  Clean spills right away with a damp cloth.

MAINTENANCE GUIDELINES:  Allow floor coating to cure for at least 7 days before cleaning by mechanical means (i.e. sweeper, scrubber, disc buffer). Increased life of the floor will be seen with proper maintenance and will help maintain a fresh appearance. Regularly sweep to avoid retention of dirt and grime which can quickly dull the finish, decreasing the life of the coating. Spills should be removed as quickly as possible as certain chemicals may stain and can permanently damage the finish. Only soft nylon brushes or white pads should be used on your new floor coating. Premature loss of gloss can be caused by hard abrasive bristle Polypropylene (Tynex®) brushes. Caution!  Some cleaners may affect the color of the floor installed. Test each cleaner in a small area, utilizing your cleaning technique.  If no ill effects are noted, you can continue to clean with the product and process tested.

DAMAGES AND REPAIRS Heavy objects dragged across the surface will scratch any floor coating. Avoid gouging or scratching the surface. Staticworx recommends protecting the floor with plywood, Masonite, or Ram boards whenever heavy equipment is being moved in or out of the space. Pointed items or heavy items dropped on the floor may cause chipping or concrete chip damage. Plasticizer migration from rubber tires can permanently stain the floor coating. If a rubber tire is planned to set on the floor for a long period of time, place a piece of acrylic sheet between the tire and the floor to prevent tire staining. Rubber burns from quick stops and starts from forklifts and lift trucks can heat the coating to its softening point, causing permanent damage and marking. Repair gouges, chips, and scratches as soon as possible to prevent moisture and chemical under cutting and permanent damage to the floor coating.

RESTRICTIONS: Restrict the use of the floor to light traffic and non-harsh chemicals until the coating is fully cured (see technical data under full cure).  It is best to let the floor remain dry for the full cure cycle. Dependent on actual complete system application, surface may be slippery, especially when wet or contaminated; keep surface clean and dry.


  • Substrate temperature must be 5°F above dew point.
  • All new concrete must be cured for at least 30 days prior to application.
  • Physical properties are typical values and not specifications.

NOTICE TO BUYER: DISCLAIMER OF WARRANTIES AND LIMITATIONS ON OUR LIABILITY We warrant that our products are manufactured to strict quality assurance specifications and that the information supplied by us is accurate to the best of our knowledge. Such information supplied about our products is not a representation or a warranty. It is supplied on the condition that you shall make your own tests to determine the suitability of our product for your particular purpose. Any use or application other than recommended herein is the sole responsibility of the user. Listed physical properties are typical and should not be construed as specifications. NO WARRANTY IS MADE, EXPRESSED OR IMPLIED, REGARDING SUCH OTHER INFORMATION, THE DATA ON WHICH IT IS BASED, OR THE RESULTS YOU WILL OBTAIN FROM ITS USE. N0 WARRANTY IS MADE, EXPRESSED OR IMPLIED, THAT OUR PRODUCT SHALL BE MERCHANTABLE OR THAT OUR PRODUCT SHALL BE FIT FOR ANY PARTICULAR PURPOSE. NO WARRANTY IS MADE THAT THE USE OF SUCH INFORMATION OR OUR PRODUCT WILL NOT INFRINGE UPON ANY PATENT. We shall have no liability for incidental or consequential damages, direct or indirect. Our liability is limited to the net selling price of our product or the replacement of our product, at our option. Acceptance of delivery of our product means that you have accepted the terms of this warranty whether or not purchase orders or other documents state terms that vary from this warranty. No representative is authorized to make any representation or warranty or assume any other liability on our behalf with any sale of our products. Our products

ESD HB-97.2 Flor Coating System Colors