APF Epoxy 400 is a low viscosity, 100% solids epoxy resin system designed for a wide range of decorative and industrial flooring applications. It is a professional grade option for full flake floors, color quartz systems, slurry floors, and high build protective coatings.
This multi-use resin is engineered to act as a primer, finish coat, or aggregate binder depending on your specific system design. Its low viscosity formulation ensures superior substrate wetting and easier handling, even in cooler conditions, without sacrificing mechanical strength or durability.
Technical Performance Snapshot
| Physical Property |
Value |
| Mix Ratio |
2 Parts A to 1 Part B |
| Compressive Strength |
19,501 psi |
| Tensile Strength |
6,230 psi |
| Flexural Strength |
9,680 psi |
| Shore D Hardness |
78 |
| Bond Strength |
>400 psi (Concrete Failure) |
Cure Schedule
| Condition (at 77°F) |
Standard Cure |
Fast Cure Option |
| Pot Life |
~20 Minutes |
Accelerated |
| Dry to Touch |
~12 Hours |
~3 Hours |
| Recoat Window |
12 to 24 Hours |
7 to 24 Hours |
Key Features and Versatility
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100% Solids Resin System: Zero solvent loss and extremely low odor for indoor installations.
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Low Viscosity Chemistry: Promotes deep penetration into concrete pores and provides excellent leveling.
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Decorative Clarity: The clear version offers excellent clarity for color quartz and pebble systems.
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High Opacity Pigments: Pre-pigmented versions provide consistent hide and color uniformity.
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Adaptable Cure Speeds: Available in Standard, Fast Cure, and UVR formulations.
Recommended Applications
- Airplane Hangar
- Light to medium duty manufacturing and warehouse environments.
- Retail and commercial spaces.
- Veterinary clinics and animal care facilities.
- Institutional and correctional facility flooring.
- Full flake, partial flake and color quartz broadcast flooring systems.
- Slurry style epoxy floors and epoxy pebble applications.
Surface Preparation Requirements
For a permanent bond, the concrete substrate must be clean, structurally sound, and mechanically profiled. Diamond grinding to a minimum ICRI CSP 2 to 3 profile is the preferred method.
Note: Acid etching is not considered a professional surface preparation method and should never be used in place of mechanical grinding or shot blasting. It does not create a consistent surface profile and may void manufacturer warranties. After proper preparation, the surface must be thoroughly vacuumed to remove all dust and debris before application.
Note: Acid etching is not a professional substitute and may void manufacturer warranties. Vacuum thoroughly after grinding.
Note: Acid etching is not a professional substitute and may void manufacturer warranties. Vacuum thoroughly after grinding.
Application Guidelines
Mixing: Mechanical mixing is required. Combine Part A and Part B at the 2:1 ratio and mix with a slow speed drill for 2 to 3 minutes. Do not introduce air into the material.
Placement: Apply immediately using a squeegee and back roll with a 3/8 inch nap roller. Use a cross rolling pattern for uniform coverage.
Coverage Rates:
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As Primer: Approximately 200 sq ft per gallon at 8 mils.
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As Coating: 80 to 200 sq ft per gallon depending on system design.
System Limitations
Where to Upgrade: APF Epoxy 400 is a general purpose resin. It is not recommended for harsh chemical exposure, hot water wash downs, or food processing environments. Upgrade to APF Epoxy 600 or a Novolac system for those conditions.
Common Frequently Asked Questions
Can I use Epoxy 400 in a residential garage?
Yes. APF Epoxy 400 works well as a base coat for full flake garage floors when applied to properly prepared concrete.
What happens if I miss the 24 hour recoat window?
You must sand the surface with 80 to 100 grit until it is gloss free before applying the next coat.
How many pigment packs do I need for a 1.5 gallon kit?
Use one pigment pack per unit. Larger kits are typically pre pigmented from the factory.
Can Epoxy 400 be used for a metallic floor?
It is not recommended. Metallic floors require a slower moving resin designed for pigment flow and pattern formation.
Is Epoxy 400 UV stable?
Standard epoxy resins can amber over time when exposed to UV light. APF Epoxy 400 is available in a UVR version for improved UV resistance. For areas with regular sunlight exposure, a UV stable topcoat should still be used.
Why is mechanical grinding required?
Grinding creates a consistent surface profile that allows the epoxy to bond properly. Acid etching does not achieve this.
Can I hand mix this product?
No. Epoxy 400 must be mechanically mixed with a slow speed drill and paddle mixer for 2 to 3 minutes. Hand mixing can lead to soft spots or uncured areas.
