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SpecPoxy Grout HS

High performance/high-strength epoxy grout

SpecPoxy Grout HS is a high-performance three-component, 100% solids epoxy grout designed for applications requiring high strength and low exotherm properties. It features a unique blend of high-strength epoxy resin and curing agents combined with specially engineered graded aggregates for exceptional flow and uniform distribution throughout the epoxy matrix. Its low exotherm characteristics allow for long working times and deep pour capabilities, making it ideal for substantial and intricate installations.

  • Superior abrasion/chemical resistance
  • Excellent volume stability for maximum bond and load transfer in applications subjected to dynamic loading
  • Pre-measured proportions for easy installation
  • Special aggregate allows high flow capability for limited access grout placement without segregation
  • High modulus of elasticity and impact resistance
  • High compressive, bond, and tensile strength for maximum durability in vibration applications
  • Low exotherm epoxy resin for deep pours up to 18″
  • Fast-cure and high early strength for minimal downtime

Tech Sheet
Safety Sheet


SpecPoxy Grout HS is suitable for demanding environments where dynamic and heavy loads are common. It is particularly effective for foundations of heavy equipment, precision grouting of base plates, and areas with substantial mechanical exposure or vibrations.

Mixing Instructions

  • Ensure air, material, and surface temperatures are above 40°F before mixing.
  • Precondition materials to 75°F for easier mixing and application.
  • Mix three parts of Part A with one part of Part B by volume for three minutes using a low-speed drill and Jiffy mixer.
  • For larger batches, transfer the mixed epoxy into a mortar mixer, slowly adding Part C (aggregate) and mix for an additional 2-3 minutes to achieve maximum yield.

Surface Preparation

  • Surfaces must be clean, dry, and structurally sound.
  • Remove all contaminants such as oil, grease, and dirt. Mechanically abrade the surface and remove any residue with oil-free compressed air.


  • Ensure continuous pouring to maintain full contact with the base plate and avoid air voids.
  • Use strapping to move the grout into position.
  • Maintain a minimum thickness of 1.0 inch and a maximum of 18 inches per lift. Use full aggregate extension for applications deeper than 6 inches.

High Flow Applications

  • For challenging placements requiring high flow, reduce Part C aggregate by up to 25% by weight.

Shelf Life

  • Store in original sealed containers in a dry area.
  • Shelf life is two years from the date of manufacture when stored properly.

Test Data

  • Compressive Strength: Achieves up to 18,650 psi at 14 days depending on extension.
  • Flexural and Tensile Strengths: Supports high-load transfers with substantial bond strengths.
  • Cure Time: Exhibits a pot life of 2 hours at 75°F, with rapid curing to facilitate quick service return.


  • USDA approved for use in food processing applications.
  • Complies with ASTM standards including C579, C580, C531, and C882.


  • Remove uncured material using SpecChem Solvent 100, Orange Peel, or other approved solvents. Comply with all local, state, and federal disposal regulations.
  • Cured material must be removed mechanically.