Five Star HP Epoxy Grout – High Flow

Five Star HP Epoxy Grout – High Flow is a precision-grade, high-flow epoxy grout designed for tight-clearance installations and fast turnarounds. It delivers early strength, long-term dimensional stability, and excellent adhesion under heavy, dynamic loads.

  • Suitable for 1–4 inch pour depths with only 1 inch of plate clearance
  • Achieves 10,000 psi compressive strength in 16 hours
  • Expansive, non-shrink formulation ensures tight contact under baseplates
  • Maintains alignment under high temperatures and sustained loads
  • Chemically resistant and solvent-free for harsh industrial settings

Five Star HP Epoxy Grout – High Flow

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Five Star HP Epoxy Grout – High Flow is a precision-grade, 100% solids epoxy system built for industrial settings that demand high strength, excellent flow, and consistent performance in tight clearances. This three-component mix — resin, hardener, and pre-packaged aggregate — creates a high-flow grout that moves easily through narrow baseplate gaps while supporting the loads of heavy equipment.

Because it’s engineered for ease of placement, this formulation flows smoothly and expands slightly to fill voids and maintain uniform contact beneath baseplates. It also cures rapidly, reaching 10,000 psi in just 16 hours, which helps speed up equipment turnaround and reduce downtime. Unlike traditional grouts, it resists long-term creep and deformation even at elevated temperatures, helping maintain precise alignment and load transfer.

Additionally, the grout bonds strongly to properly prepared concrete and steel. It’s solvent-free and highly chemical-resistant, making it ideal for use in harsh environments. Whether supporting compressors, turbines, pumps, or structural machinery, this high-flow epoxy performs reliably in power plants, chemical facilities, and other demanding industrial applications where flowability and strength are both critical.

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Key Features of Five Star HP Epoxy Grout

  • High-Flow Formulation for Tight Clearances
    Designed for efficient placement in baseplates with as little as 1 inch of clearance — ideal when flowability is critical but access is limited.
  • Rapid Strength Gain
    Reaches compressive strengths of 10,000 psi in 16 hours and 14,000 psi within one day.
  • Non-Shrink with Positive Expansion
    Expands slightly during cure per ASTM C827, helping maintain alignment and bearing support.
  • Exceptional Creep Resistance
    Resists deformation under sustained loads and high temperatures.
  • Excellent Bond to Concrete and Steel
    Develops structural-grade adhesion for critical baseplate and equipment support.
  • Chemically Resistant and Solvent-Free
    Handles exposure to industrial chemicals without shrinkage or degradation.

Recommended Uses for Five Star HP Epoxy Grout

Five Star HP Epoxy Grout – High Flow is designed for equipment installations where tight access and high flow performance are essential. Its formulation allows it to move easily into narrow spaces without sacrificing strength or long-term durability. Use it when working in:

  • Baseplates with clearances of 1 inch or more
  • Wind turbine and generator foundations
  • Pumps, compressors, and other rotating equipment
  • Chemical processing units and wastewater systems
  • Anchor bolt and dowel placements
  • Jobs requiring fast strength gain and limited shutdown time

Best Used When:

  • Equipment clearance ranges from 1 to 4 inches
  • Full coverage under tight baseplates is critical
  • Downtime must be kept to a minimum
  • Operating temperatures may reach elevated levels
  • Reliable load transfer and long-term stability are required

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Technical Specifications – Five Star HP Epoxy Grout

Professional-grade epoxy grout with comprehensive performance data for critical industrial applications.

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17,000 PSI Post-Cured Strength
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180°F Service Temperature

ASTM C827 Positive Expansion
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45-60 min Working Time

Compressive Strength Development: ASTM C579 B tested values for optimal performance
Time High Flow (4-bag) Standard (5-bag)
16 hours 10,000 psi 11,000 psi
1 day 14,000 psi 15,000 psi
7 days 16,000 psi 16,500 psi
Post-cured @ 140°F 17,000 psi 17,500 psi

Physical Properties: Superior performance characteristics for demanding applications
Property High Flow (4-bag) Standard (5-bag)
Tensile Strength 2,000 psi 2,400 psi
Flexural Strength 4,400 psi 4,800 psi
Effective Bearing Area 95%
Creep @ 140°F (1 year) 2.0 x 10⁻³ in/in 1.2 x 10⁻³ in/in
Bond to Concrete Concrete Failure
Coefficient of Expansion 18 x 10⁻⁶ in/in/°F 17 x 10⁻⁶ in/in/°F

Application Information: Variable configurations for optimal placement
Parameter High Flow (4-bag) Standard (5-bag)
Aggregate Bags 4 bags 5 bags
Yield 1.75 ft³ 2.0 ft³
Working Time @ 70°F 45 minutes 60 minutes
Min. Plate Clearance 1 in. (25 mm) 4 in. (100 mm)
Placement Depth 1-4 in. (25-100 mm) 4-6 in. (100-150 mm)
Max Service Temp 180°F (82°C)


ASTM C827 Positive Expansion

Superior Creep Resistance

95% Effective Bearing Area
Professional Installation Required: Contact a sales representative for project-specific recommendations and pre-job consultation

Frequently Asked Questions

What’s the minimum clearance required for Five Star HP High Flow Epoxy Grout?
This grout needs only 1 inch of clearance beneath the baseplate, which makes it well-suited for confined or tight-access installations.

How soon can I put equipment back in service?
You can typically restart equipment after 16 hours at 70°F, once the grout reaches sufficient compressive strength.

Can I pour this version of Five Star HP High Flow Epoxy Grout?
Yes. Thanks to its high-flow formulation, you can easily place it by pouring through a headbox or similar setup.

Does HP High Flow resist both chemicals and heat?
Absolutely. It withstands harsh chemical environments and performs reliably in continuous temperatures up to 180°F (82°C).

What surface preparation is needed before installation?
Concrete and steel must be clean, dry, and properly profiled to ensure bond performance. Always follow the manufacturer’s surface prep guidelines.

Can HP High Flow be used for thicker pours?
Generally, it’s intended for depths between 1 and 4 inches. If your application exceeds this range, consult a sales representative for best practices and alternate options.

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