In waterproofing solutions for 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, avoiding obscure academic formulas, to help you understand the essential differences between the two types of roll materials and provide practical selection advice for different usage scenarios.
In recent years, China's construction waterproofing industry has witnessed a transformative shift from traditional asphalt-based materials to advanced polymer materials. Three representative polymer waterproofing membranes—PVC (Polyvinyl Chloride), TPO (Thermoplastic Polyolefin), and HDPE (High-Density Polyethylene)—are becoming the preferred solution for modern construction waterproofing due to their exceptional performance. This article provides an in-depth analysis of the characteristics and applications of these three materials and highlights the innovative achievements of industry leader Canlon in the polymer sector.
Polymer waterproofing membranes play a critical role in modern construction, with Thermoplastic Polyolefins (TPO) and Polyvinyl Chloride (PVC) being two widely used primary materials. Their long-term performance, particularly weatherability and durability, directly determines the reliability and service life of building envelopes. This article will delve into the impact of environmental factors on the molecular structures of these two materials from a materials science perspective and explore the underlying aging mechanisms and their respective application scenarios.
In the history of modern construction, persistent leakage, akin to a "water curtain cave," has long plagued the industry and end-users. The limitations of traditional waterproofing materials in terms of durability, environmental friendliness, and construction convenience have struggled to meet the higher demands of contemporary buildings for long-term safety, energy efficiency, and sustainability. Today, polymer waterproofing membranes, represented by PVC (Polyvinyl Chloride), TPO (Thermoplastic Polyolefin), and HDPE (High-Density Polyethylene), are leading a technological revolution with their superior performance, becoming the preferred solution for large public buildings, industrial plants, transportation hubs, and green roofs.
On December 18, 2025, the Hainan Free Trade Port will officially launch the island-wide customs closure, marking a landmark step in China's opening up to the outside world. The construction of the Hainan Free Trade Port is a major reform and opening-up initiative personally planned, deployed, and promoted by General Secretary Xi Jinping. The official launch of the island-wide customs closure marks a crucial leap for the Hainan Free Trade Port towards its highest level of openness. In the process of contributing to the nation's new development pattern, Canlon has also actively participated, providing high-quality roofing system solutions for the Hainan Free Trade Port.
Since the beginning of the 20th century, SBS (styrene-butadiene-styrene) bitumen-based waterproof membranes have been widely used in waterproofing projects. With the rapid development of the times, they have been continuously improved and evolved to take into account the importance of environmental protection. For a long time, they have remained popular due to their low cost. As a representative of new synthetic polymer waterproof materials, TPO (thermoplastic polyolefin waterproof membrane) has developed rapidly in the European and American markets since its birth in the 1990s. Due to its advantages such as anti-aging, high tensile strength, large elongation, and ability to be applied to damp roofs, it has long occupied the number one position in the North American roofing market. Today, Canlon will take the roofing scenario as an example to analyze the performance comparison of TPO membrane and SBS membrane, two common roofing waterproofing materials.
Recently, Canlon has added another internationally authoritative certification – its TPO/PVC waterproof membrane has successfully passed the product rating accreditation of the Cool Roof Rating Council (CRRC) after three years of outdoor testing, making it one of the few domestic companies to hold certifications for both polymer waterproof materials. This also signifies that Canlon's roofing waterproofing products have reached internationally advanced levels in terms of thermal radiation efficiency and green energy-saving performance, opening new channels for expanding into the global green building market.
In recent years, with the advancement and deployment of carbon peaking and carbon neutrality initiatives, high-performance PVC and TPO polymer waterproof membranes, which offer energy savings and environmental benefits, have experienced rapid growth in China. Due to their superior physical properties, they exhibit exceptionally long-lasting aging resistance when used directly exposed, and have long held the position of "King of Roofing" in the North American market.
On November 6th, the 10th PV & Energy Storage Innovation Conference (PVIC 2025), hosted by PV Industry Network and Energy Storage Industry Network, grandly opened in Hefei, Anhui. At the concurrently held "TOP 50" 2025 PV & Energy Storage Innovation Ranking Release and Awards Ceremony, Canlon New Energy won the "2025 Industrial and Commercial PV Brand Influence Enterprise" award for its outstanding performance in the field of industrial and commercial distributed PV.