In the field of building waterproofing, "rigidity" and "flexibility" have never been opposing choices but rather complementary solutions. High-performance waterproofing coatings represented by polyurethane (MPU), with their exceptional elasticity, seamless formation, and perfect integration with substrates, are becoming indispensable "flexible defenses" in modern waterproofing engineering. When they work in synergy with "rigid waterproofing" systems such as cementitious capillary crystalline materials, they form a perfect "rigid-flexible, complementary" waterproofing barrier. This article focuses on the unique advantages of polyurethane waterproofing coatings, exploring their irreplaceable role in complex details, bathrooms, basements, and other scenarios, and analyzes the development trends of new solvent-free and spray-applied coatings.
Recently, the Ministry of Housing and Urban-Rural Development released the "Guidelines for the Construction of 'Good Houses' (Trial)," which sets out four core standards for high-quality housing construction in the new era: "safety and durability, health and comfort, green and low-carbon, and smart and convenient." Among them, waterproofing, moisture-proofing, leakage prevention, and damp-proofing are key bottom lines related to residential safety and quality. As a leading enterprise deeply rooted in the field of polymer waterproofing, Canlon closely aligns with the comprehensive requirements for "good housing" construction. It actively participates in the compilation of numerous national standards, national standard atlases, authoritative local standard atlases, and national reference atlases.
Among the many waterproofing materials available, polyurethane waterproof coatings are becoming an increasingly popular choice due to their superior physical properties. Today, we'll discuss one of the more technologically advanced options: white, anti-sagging polyurethane. The emergence of "anti-sagging" technology is precisely to win this battle against gravity. It gives the coating a magical "thixotropic" property: during application, it is soft and smooth, easy to brush; once the brush stops, it's as if it's been "frozen," quickly solidifying and adhering firmly to the wall or slope. This ensures a uniform coating, eliminating the problem of uneven thickness caused by dripping at its source. Furthermore, uniform application reduces material waste and avoids the need for repeated brushing due to insufficient initial coat thickness.
On November 6th, the winners of the first "Good Waterproofing for Good Houses" Solution Evaluation Competition, organized by the China Building Waterproofing Association, were officially announced. Canlon's "MPU-N Solvent-Free Polyurethane Waterproof Coating" won second prize in the competition. Canlon has launched a number of innovative products suitable for repair and leak filling in response to the waterproofing and protection needs of old residential area renovation projects, such as waterproofing repair, crack repair, and reinforcement. The MPU-N solvent-free polyurethane waterproof coating, which won the award this time, is a representative product among them.
Recently, the Jiangsu Provincial Department of Housing and Urban-Rural Development released the second batch of new technologies for key promotion and application in improved housing. Starting from waterproof materials, water supply and drainage, renewable energy, prefabricated decoration, and all-age friendliness, a batch of new technologies and processes were announced to promote the construction of safe, comfortable, green and smart improved housing. The document prioritizes the promotion of waterproofing materials and new technologies for underground and roofing projects, including polymer-modified asphalt waterproofing membranes, synthetic polymer waterproofing membranes, reactive polymer waterproofing coatings, and hot-melt rubberized asphalt waterproofing coatings. Waterproofing materials suitable for interior, roofing, and exterior wall projects can include polymer emulsion waterproofing coatings and cement-based waterproofing materials, and detailed requirements are outlined.
Prior to this, the successful convening of Canlon Global Partner Conference-Vietnam in Hanoi laid an important milestone for Canlon to expand into the Southeast Asian market. We will soon be able to see Canlon products in Vietnam - a project invested and constructed by a domestic company in Vietnam, trucks from China Railway are delivering barrels of Canlon MPU polyurethane waterproof coating to the construction site, and local professional Vietnamese construction workers are scraping and coating the roof.
Recently, according to the National Public Resource Trading Platform, for the new Jining via Datong to Yuanping Passenger Dedicated Line, the bidding candidates for waterproof coatings and waterproof membranes have been announced.
Recently, the Ministry of Housing and Urban-Rural Development organized multi-unit drafting of the national standard "technical specifications for roofing works (partial revision of the draft provisions for public comment)", for public comment.
