Epoxy Waterproof Coating

Epoxy waterproof coating is based on epoxy resin, reaction-cured, forming a hard, dense film. It offers extremely high bond strength, compressive strength, and chemical resistance, suitable as both waterproofing and protective layer. Non-toxic and odorless, it can be used in potable water tanks. Good abrasion resistance makes it ideal for parking lots, factory floors with load requirements. We offer intermediate, topcoat, and primer series with adjustable color and gloss. Commonly used in basement slabs, sewage tanks, laboratories, pharmaceutical workshops requiring stringent waterproofing and corrosion protection.

TYPES OF EPOXY WATERPROOF COATINGS

KINJOYA EPI

Two-component strengthening layer used between epoxy primer and topcoat. Improves surface flatness, increases coating thickness, and enhances compression and impact resistance. Quartz sand or powder can be added.

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KINJOYA EPT

Top layer of epoxy floor coating system. Provides aesthetic decorative effect, wear resistance, slip resistance, chemical corrosion resistance, and weather resistance, protecting underlying coating and substrate.

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High-Strength Physical Properties of Epoxy Waterproof Coating

Compressive & Wear Resistance

After curing, epoxy waterproof coating forms a dense three-dimensional cross-linked network structure with extremely high hardness and compressive strength. Its surface withstands heavy vehicle traffic, impact from stacked goods, and frequent foot traffic without easily scratching or damaging. This exceptional wear resistance makes it particularly suitable for demanding locations like underground garages, industrial plants, and logistics warehouses.

Structural Reinforcement

This coating not only waterproofs but also significantly enhances the overall structural strength of the substrate. Epoxy penetrates into concrete capillaries before curing, forming a robust reinforcing layer that effectively seals micro-cracks and prevents further substrate deterioration. This dual function of waterproofing and reinforcement makes it an ideal companion material for strengthening and repairing bridges, tunnels, and aging structures.

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Chemical Corrosion Resistance of Epoxy Waterproof Coating

Chemical Barrier

The molecular structure of epoxy resin contains stable ether bonds and benzene rings, providing excellent resistance to acids, alkalis, salt solutions, and various organic solvents. In chemical plant floors, electroplating workshops, or wastewater treatment tanks, the coating effectively blocks corrosive media from contacting concrete, preventing structural loosening and spalling due to chemical attack, significantly extending building service life.

Long-lasting Protection

After curing, epoxy coating forms a mirror-like dense barrier with near-zero permeability, completely blocking the ingress of moisture, oxygen, and corrosive ions. This long-term stable protection prevents steel reinforcement corrosion and concrete carbonation, making it particularly suitable for integrated waterproofing and anti-corrosion projects in harsh environments such as coastal buildings, sea-crossing bridges, and sewage facilities.

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Adhesion and Floor Integration of Epoxy Waterproof Coating

Epoxy waterproof coating exhibits extremely high adhesion to various substrates including concrete, metal, and tiles. Active groups at the ends of its molecular chains form chemical bonds with hydroxyl groups or metal ions on the substrate surface, achieving bonding strength far exceeding ordinary coatings. After application, it forms a seamless floor system with topcoats, integrating coating and substrate without hollowing or delamination, combining waterproofing, seepage resistance, and decorative functions for laboratories and food processing workshops.