Polyethylene Polypropylene (Polyester) Composite Waterproof Membrane is a high-performance flexible polymer waterproofing material composed of a high-density polyethylene (HDPE) waterproof core layer and double-sided polypropylene non-woven fabric (or polyester fiber fabric) composite layers.
The HDPE core layer provides excellent water resistance and impermeability, while the surface fiber layers create a rough and porous structure that bonds strongly with cement mortar and concrete. This allows the membrane to integrate tightly with the building structure, effectively preventing hollowing, peeling, and water migration.
Unlike traditional bitumen-based waterproof materials, this product contains no asphalt, produces no harmful emissions, and provides excellent resistance to water immersion, chemical corrosion, and microbial aging. It is installed using cement-based adhesive materials without open flame or solvent, making it safe and convenient for indoor and underground applications.
With excellent flexibility, durability, and cost efficiency, it is widely used for bathrooms, basements, water tanks, roofs, tunnels, and various concrete waterproofing projects.
Key Features & Benefits
When waterproofing projects require strong bonding, excellent flexibility, and reliable protection in wet environments, QINGYUAN Polymer Composite Waterproof Membrane provides an efficient and durable solution for residential, commercial, and underground applications.
Cement-based bonding technology creates strong adhesion between the membrane and substrate, preventing delamination and water migration.
High-density polyethylene core layer provides excellent waterproof performance and long-term resistance to water penetration.
Excellent water resistance allows stable performance in long-term wet environments such as basements, pools, and underground structures.
Cold installation without flame or solvents improves construction safety and reduces fire risks.
Excellent flexibility and elongation allow the membrane to adapt to minor substrate movement and reduce cracking risks.
Non-asphalt and environmentally friendly materials provide clean installation without harmful emissions or unpleasant odors.
Lightweight structure and high cost-effectiveness make it an ideal waterproof solution for large-scale projects.
Suitable for various applications including bathrooms, roofs, basements, water tanks, tunnels, and water conservancy projects.
Strong resistance to acids, alkalis, and microorganisms ensures reliable durability in underground and harsh environments.
Our Product Specifications
- Product structure: HDPE waterproof core layer + double-sided polypropylene/polyester fiber composite layer.
- Product types: Polypropylene composite membrane / Polyester composite membrane.
- Standard thickness options: 0.6mm / 0.7mm / 0.8mm / 1.0mm.
- Standard weight options: 400g / 500g / 600g / 800g.
- Tensile strength: ≥60N/50mm (up to ≥90N/50mm for reinforced grades).
- Elongation at break: ≥300%.
- Low-temperature flexibility: -20°C without cracking.
- Waterproof performance: 0.3MPa water pressure for 30 minutes without leakage.
- Water resistance: 168 hours immersion without performance degradation.
- Cement bonding performance: Strong adhesion with mortar without membrane separation.
You get more than waterproofing — you get long-term protection, structural stability, and worry-free performance in every climate.
Standard Construction Process
Professional installation methods ensure strong bonding, reliable waterproof protection, and long-lasting performance for different building structures.
Base Surface Preparation
Clean dust, debris, and loose materials from the substrate. Repair uneven areas and keep the surface slightly wet without standing water before installation.
Adhesive Mortar Preparation
Mix cement, water, and specialized polymer adhesive powder evenly to prepare the bonding slurry for membrane installation.
Membrane Installation
Apply cement adhesive evenly on the substrate, lay the composite membrane, and use a roller to remove air bubbles and ensure complete bonding.
Overlap Joint Sealing
Overlap membrane edges according to installation requirements and apply cement-based sealing treatment to create a continuous waterproof layer.
Detail Reinforcement Treatment
Strengthen critical areas such as corners, pipe penetrations, and construction joints with additional membrane layers.
Protective Layer Installation
After the waterproof layer is fully cured, apply cement mortar or concrete protection layers to prevent damage during subsequent construction.
Our Guarantee
As a trusted waterproofing material manufacturer, QINGYUAN Waterproof focuses on product innovation, precise manufacturing, and strict quality management. We ensure every roll is produced according to standard specifications, providing consistent quality, reliable performance, and dependable solutions for global construction projects.
1. Raw Material Assurance
We use high-grade bitumen and SBS elastomer to ensure stable modification performance and consistent product quality.
2. Manufacturing Quality Control
Every roll is produced under standardized manufacturing processes with strict control of thickness, weight, and surface uniformity.
3. Performance Compliance Assurance
All products are tested according to GB 18242-2008 standard, ensuring key performance such as tensile strength, flexibility, and waterproofing meet requirements.
4. Factory Consistency Assurance
We ensure stable batch-to-batch production consistency to support reliable large-scale engineering supply.
Our Installation Projects
