In the development history of building waterproofing materials, Polyvinyl Chloride (PVC) membranes have undergone a technical transformation from "widely questioned" to "mature and reliable." The embrittlement and cracking issues caused by plasticizer migration in early products once cast a shadow over this material. However, after decades of formulation optimization and technological iteration, modern PVC membranes have become an indispensable choice in underground engineering, tunnel and bridge projects, and roofing waterproofing, thanks to their cost-effectiveness and full-scenario applicability. This article traces the evolutionary path of PVC membranes, analyzes the technical logic behind their green upgrade, and highlights the innovative practices of industry benchmark enterprises.
In waterproofing applications such as roofs, basements, and municipal engineering projects, polymer waterproof membranes are undoubtedly the mainstream choice today, with TPO and PVC being the two core materials. However, many homeowners, renovation professionals, and even newcomers to the industry easily confuse the two – both are polymer membranes, both can be hot-air welded, and both are high-performance roofing materials, but their actual materials, lifespans, and applicable scenarios are quite different! Today, Canlon will use simple, popular science language to clarify the essential differences between the two types of roll-on sheets, and provide practical selection advice for different usage scenarios.
Beijing Zhongrong Hengtai Technology Development Co., Ltd., founded in 2014 and headquartered in Beijing, the capital of China, is a large-scale professional international enterprise integrating research and development, production, sales and construction, specializing in architectural decorative coatings, fireproof coatings and special coatings. To improve integrated building safety solutions and expand into the specialty new materials market, Canlon and Zhongrong Hengtai have formed a deep strategic partnership, jointly establishing Jiangsu Canlon Specialty Materials Co., Ltd. Canlon holds a 51% controlling stake in the company, leveraging their complementary strengths to achieve comprehensive resource sharing across channels, technology, production capacity, and brand.
The siphon phenomenon is a natural phenomenon in fluid mechanics. It utilizes the weight and pressure difference of the liquid itself to easily draw the liquid from a high place to a low place without the aid of an external pump. Canlon's siphon roof drainage system relies on Bernoulli's fluid dynamics equations and is equipped with self-developed hydraulic calculation software to accurately match pipe diameter and number of ducts, ensuring stable siphon activation during extreme rainfall and forming full pipe flow. This is different from traditional gravity semi-pipe drainage and achieves rapid drainage.
Recently, Canlon Waterproofing Systems provided on-site technical guidance for the roof repair project of the Johar high-end commercial complex in Lahore, Pakistan, once again demonstrating the international strength of Canlon Waterproofing Systems. Located in a high-end business and residential area of Lahore, the project boasts convenient transportation, a large building scale, and diverse business formats, including retail, catering, entertainment, and supporting services, thus requiring high reliability of the roof waterproofing. The roof utilizes a single-ply polymer waterproof membrane system. However, after the mall opened, the Pakistani maintenance and construction teams lacked a standardized management system: there were no dedicated protective walkways on the roof, repairs lacked standardized procedures, and repeated damage to the membrane during long-term inspections, cleaning, and equipment maintenance resulted in numerous tears, holes, and leaks due to sealant failure.
In high-end industrial sectors such as new energy, precision manufacturing, and biopharmaceuticals, buildings are no longer mere shelters from wind and rain. A lithium battery plant workshop must strictly maintain temperatures below 25°C and humidity below 30%; otherwise, battery performance and yield rates are directly affected. If air quality fluctuates in a semiconductor cleanroom, the entire production line may face shutdown. In such scenarios, the roofing system is no longer just a waterproofing layer, but a "Super Shield" that safeguards production safety, product quality, and operational efficiency. Polymer waterproofing membranes represented by TPO, with their comprehensive properties of weatherability, energy-saving high reflectivity, chemical corrosion resistance, and wind uplift resistance, are becoming the preferred choice for high-end industrial plant roofing projects.
Recently, the State Council officially issued the national-level top-level document, the "15th Five-Year Plan for Urban Renewal". As China's first national five-year special plan for urban renewal, it establishes four legally mandated implementation paths: government guidance, market operation, public participation, and technological empowerment. It is supported by six key tasks, fourteen major projects, and a three-tiered funding system of fiscal, financial, and social capital. The market size of existing urban renewal is expected to reach 15-20 trillion yuan in the next five years.
June is here , and the sweltering summer is just around the corner , so don't miss out on the fun of water activities . To truly enjoy the water , a healthy, environmentally friendly, and high-quality swimming pool is the heart and face of a water park . Let Canlon explain in detail what materials to choose for pool waterproofing. Canlon aspartic polyurea systems possess excellent durability, exhibiting long-term resistance to UV radiation without discoloration, chalking, cracking, or peeling. They also boast superior wear resistance, impact resistance, freeze-thaw resistance, strong environmental adaptability, and good toughness. Furthermore, they offer waterproofing, corrosion resistance, low carbon footprint, environmental friendliness, and are safe and non-toxic. Suitable for coating various water parks, amusement park water-related projects, and swimming pool projects.
The Phase II Expansion Project of Asia Pulp & Paper (Shandong) Co., Ltd., for its household paper products, is located in Rizhao Economic Development Zone. It is a key industrial expansion project of the province and city, with a total investment of RMB 1.2 billion and a total construction area of approximately 92,000 square meters. The project mainly involves the construction of a new paper-making plant, a deep processing workshop, an intelligent automated warehouse, and supporting public and environmental protection facilities. It will also build six new high-end household paper production lines. After completion, the company's total household paper production capacity will reach 300,000 tons/year, with an annual increase in output value of over RMB 2.2 billion. This will further strengthen the regional pulp and paper industry cluster and bring significant economic and social benefits.