Modified Bitumen Waterproof Coating

Modified bitumen waterproof coating offers a cold-applied, versatile solution for roofs, basements, bridges, and culverts. Applied by spray or trowel, it accommodates low substrate requirements while ensuring reliable adhesion. Available in classic and weather-resistant formulations, the coating can be reinforced with polyester fabric to build multi-layer systems—ideal for maintenance or new builds. This combination delivers both flexibility and high tensile strength, effectively bridging substrate cracks and resisting water ingress. Its ease of use at ambient temperatures reduces installation risks, making it a preferred choice for professionals seeking durable, field-adaptable waterproofing across demanding civil and building projects.

TYPES OF Modified Bitumen Waterproof Coating

KINJOYA JX CLASSIC

Flexible waterproof coating made with asphalt, synthetic rubber, emulsifiers, and stabilizers. Combines rubber elasticity with asphalt waterproofing. Adapts to minor substrate deformation. Safe and environmentally friendly.

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JOYA FN EZSHIELD

JOYA FN EZSHIELD is a high-performance, single-component water-based waterproof coating from liquid rubber with anti-aging agents, additives, and pigments. It forms a highly elastic, heat-resistant film for exposed waterproofing applications.

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JOYA FN EZFLEX

JOYA FN EZFLEX Rubber Asphalt Waterproof Coating uses polymers and catalytic additive to form stable asphalt-polymer bonds, supports plastering, coating, pouring, and sheet compounding, and is internationally leading waterproofing material.

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Key Advantages of Rubberized Waterproof Coating

Self-Healing Properties

Rubberized asphalt coatings contain elastic polymers that allow the film to self-repair minor cracks and punctures. When the coating is slightly damaged, the material can flow and reseal the area, maintaining waterproof integrity. This self-healing characteristic significantly extends the effective service life of the waterproofing system, especially in environments with minor structural movement or settlement.

Excellent Adhesion and Cold Application

This coating bonds strongly to various substrates including concrete, metal, wood and existing roofing materials without requiring torches or hot equipment. The cold-applied nature eliminates fire risks and makes it safe for use in confined spaces or on structures where open flames are prohibited. Application by brush, roller or spray is simple and efficient.

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Adhesion of Rubberized Waterproof Coating to Various Substrates

Strong Bond to Concrete & Masonry

On one hand, rubberized waterproof coating exhibits excellent adhesion to traditional building materials such as concrete and cement mortar. The coating penetrates into capillary pores and micro-depressions on the substrate surface, forming strong mechanical anchorage after curing. Simultaneously, rubber molecular chains create physical adsorption and chemical bonding with active groups on the substrate surface, ensuring the film does not delaminate or blister under long-term water immersion or temperature fluctuations.

Compatibility with Existing Surfaces

On the other hand, this coating also demonstrates good adhesion to metals, wood, and some existing waterproofing layers. In roof renovation projects, it can be applied directly over the old waterproofing system without complete removal, forming a new composite waterproofing system. This broad substrate adaptability significantly simplifies construction procedures, reduces demolition work, and lowers renovation costs, making it particularly suitable for existing building repair and retrofit projects.

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Elastic Crack Resistance of Rubberized Waterproof Coating

Based on high-quality rubber latex, this coating cures to form a highly elastic film with excellent elongation. When substrate cracking occurs from temperature changes or settlement, the film stretches without rupturing to maintain a waterproof barrier. Multiple coats create a thick film with a three-dimensional polymer network that effectively disperses substrate stress. Even under significant deformation, the film accommodates stress through elastic deformation, preventing localized damage and ensuring reliable protection for crack-prone areas.