PU Liquid Rubber, short for polyurethane liquid rubber, is a high-performance, elastomeric waterproofing and protective coating that is widely used in modern construction and industrial applications. It is typically applied as a liquid and cures to form a seamless, flexible, rubber-like membrane that provides long-lasting resistance against water, weather, chemicals, and physical stress. One of the key advantages of PU Liquid Rubber is its excellent elasticity and crack-bridging ability, which enables it to accommodate structural movement, thermal expansion, and surface cracking without losing its waterproofing performance. This makes it especially suitable for structures exposed to dynamic stress or harsh environmental conditions.
PU Liquid Rubber offers strong adhesion to a wide range of substrates including concrete, metal, wood, bitumen, brick, and cement boards, making it highly versatile for both new construction and repair works. It is commonly used for waterproofing roofs, terraces, balconies, basements, water tanks, wet areas, foundations, bridge decks, parking structures, and more. In industrial applications, it is also used for protecting surfaces against corrosion and chemical exposure. The liquid form allows for easy application using a brush, roller, or spray equipment, and once cured, it forms a continuous, joint-free membrane that eliminates common points of failure such as seams or overlaps.
In addition to its waterproofing properties, PU Liquid Rubber also provides excellent resistance to UV rays, ozone, temperature fluctuations, and pollutants, which contributes to its long service life. It is also often used in combination with geotextiles or reinforcement mesh in areas requiring extra strength or puncture resistance. Some advanced PU Liquid Rubber systems come with fast-curing technology, allowing them to be rain-safe and foot-traffic ready within a few hours of application, making them ideal for time-sensitive projects.
Another important feature is that many PU Liquid Rubber formulations are eco-friendly, solvent-free, and low in VOCs, making them safe for use in both indoor and outdoor environments. Their ease of application and minimal surface preparation reduce labor costs and downtime, while their long-term durability minimizes the need for frequent maintenance or re-application. All of these factors combined make PU Liquid Rubber a preferred choice for architects, engineers, and contractors who demand reliable and cost-effective waterproofing and protection solutions for critical infrastructure.