Product introduction

Mainly made of high-density polyethylene (HDPE) sheets as the core, the upper surface is coated with a self-adhesive layer bonded with post-pouring concrete, and the upper surface is covered with an anti-adhesive protective layer. In order to meet the requirements of the composite construction of two waterproof materials for the basement floor, a back-adhesive self-adhesive layer is specially added. Before the initial setting of the post-cast concrete, the concrete and the self-adhesive layer of the coiled material slowly cross-link and mesh under the action of gravity, and physical adsorption and mortise-tenon effect are generated during the cement curing process, so that the coiled material and the post-cast concrete are firmly bonded together and are not easy to detach

Product Advantages

• The polymer self-adhesive film layer has excellent adhesive properties, and pre-applied bonded back waterproofing system is used to form a fully adhesive waterproof structure with the main body of the post-pouring structure, leaving no hidden danger of water channeling；
• The anti-stick layer has a good bonding and adhesion effect with the cast-in-place concrete;
• HDPE can maintain good chemical stability and long service life in common inorganic, organic acid, alkali, salt, organic solvent and microbial environments;
• Strong plastic deformation ability, perfectly showing the application performance of the polymer sheet;
• Micro-design system (technology), balancing the bonding and peeling effects, and realizing the controllability of waterproof defects;
• The polymer sheet is flexible, dense, and has good corrosion resistance, and can be designed with special environmental adaptability. Environmentally friendly design, energy saving and environmental protection;
• Standardized construction process, reliable lap joint and fixation.

Applied range

• Traffic Engineering: Waterproof and anti-seepage projects such as subways, tunnels, caverns, and bridges；
• Construction Engineering: Waterproof projects such as roofs and basements;
• Water Conservancy Engineering: Waterproof and anti-seepage projects such as reservoir dams, cofferdams, canals, and artificial lakes;
• Environmental Protection Engineering: Waterproof and anti-seepage projects such as landfills, sewage treatment plants, metallurgical plants, and chemical plants.

Product Specification

Technical indicators

Product lmage

Polymer waterproof sheets are high-performance construction materials designed to provide reliable and long-lasting protection against water ingress in buildings, infrastructure, and industrial applications. Made from synthetic polymers such as SBS (styrene-butadiene-styrene), APP (atactic polypropylene), PVC (polyvinyl chloride), TPO (thermoplastic polyolefin), or other modified compounds, these sheets combine flexibility, tensile strength, and chemical resistance. The key advantage of polymer waterproof sheets lies in their ability to form a continuous, seamless barrier that prevents moisture from penetrating structures, thereby protecting the integrity and durability of the building. Unlike traditional waterproofing methods such as cementitious coatings or bitumen sheets, polymer sheets are highly resistant to cracking, aging, and environmental stress, making them ideal for long-term waterproofing projects.

Installation versatility is another significant benefit of polymer waterproof sheets. They can be applied through self-adhesion, heat welding, or mechanical fastening depending on the project requirements and substrate type. Self-adhesive sheets provide quick, clean application with immediate adhesion, while heat-welded sheets create a seamless surface that maximizes water resistance. Mechanically fixed sheets are particularly useful for areas exposed to strong winds, heavy loads, or structural movement. These sheets are compatible with a variety of surfaces, including concrete, metal, asphalt, and previously installed membranes, which allows them to be used in both new constructions and renovation projects. Additionally, polymer waterproof sheets maintain their performance under extreme temperature fluctuations, UV exposure, and chemical contact, ensuring that the protected structures remain safe and durable over decades of service.

Polymer waterproof sheets are widely used in diverse construction applications, from residential and commercial roofing to underground structures, basements, terraces, bridges, tunnels, swimming pools, and parking decks. Their flexibility enables them to adapt to irregular surfaces and complex geometries, while their durability ensures that joints, seams, and overlaps remain watertight. Furthermore, polymer sheets contribute to sustainable construction practices by reducing material waste and energy consumption during installation. Their long service life decreases the need for frequent repairs or replacements, minimizing environmental impact and operational costs. Modern polymer sheets may also incorporate reflective surfaces or enhanced thermal properties to improve energy efficiency in roofing applications, demonstrating their multifunctional capabilities in contemporary building design.

The economic advantages of polymer waterproof sheets are considerable. Although initial material costs may be higher than some conventional waterproofing solutions, their durability, low maintenance requirements, and reduced labor costs over time make them highly cost-effective. By preventing water damage, corrosion, mold, and structural deterioration, these sheets protect a building’s value and extend its lifespan. Furthermore, the reliable performance of polymer waterproof sheets ensures compliance with strict building regulations and standards, making them an essential component in large-scale infrastructure projects and high-rise constructions where safety and durability are critical.

Technological innovations continue to enhance the performance of polymer waterproof sheets. Improved polymer formulations increase elasticity, adhesion, and resistance to environmental stress, while advanced surface coatings and composite layers offer additional protective properties. These innovations allow engineers, architects, and builders to address complex waterproofing challenges effectively, ensuring that modern structures meet both functional and aesthetic requirements. With their combination of flexibility, durability, environmental resistance, and ease of installation, polymer waterproof sheets remain a cornerstone of high-quality waterproofing systems worldwide.