BOSLAI Water-Based Polyurethane Waterproof Coating (PU waterproof coating) is an eco-friendly, high-molecular elastic waterproof material, which is non-toxic and odorless. It offers excellent adhesion and breathability. It has strong adhesion to concrete substrates, stone, and metal surfaces, with stable chemical properties. It can withstand long-term sunlight exposure, providing UV protection, and features high strength, large elongation, and good elasticity.
Single-component / Eco Friendly / OEM Accepted / UV Resistant / Brush or Sprayer Applied
APPLICATION RANGE
1.Building Surfaces: Roofs and terraces, Interior and exterior walls, Balconies.
2.Indoor Spaces: Bathrooms, Warehouses, Kitchens.
3.Special Structures: Basements, Pools, Water tanks.
4.Infrastructure: Tunnels, Bridges, Reservoirs.
PACKAGING & COVERAGE
| Specification: | 18kg/pail or 50kg/pail |
| Appearance: | Single component, viscous emulsion, color can be customized. |
| Coverage: | It is recommended to apply two coats, with each pail covering 13~15m2. |
| Warranty period: | More than 10 years. |
| Shelf Life: | 1 Year |
TECHNICAL DATA
| Item | Data |
| Tensile Strength, MPa ≥ | 6.74 |
| Elongation at Break, % ≥ | 352 |
| Low-Temp Flexibility | -35°C, no cracks |
| Water Resistance (0.3 MPa 0.5a) | 0.3 MPa, 120 minutes, Impermeable |
| Surface Drying, h | 8 |
| Thorough Drying, h | 23 |
| Bonding Strength, MPa | 1.2 |
| Water Absorption Rate, % | 4.3 |
DOWNLOAD TDS
TDS_Water-Based Polyurethane Waterproof Coating.pdf
ADVANTAGES
BOSLAI water-based polyurethane waterproof coating offers 5 core advantages:
- UV resistance: It can withstand long-term exposure to sunlight, making it suitable for use in any outdoor environment without degradation or peeling.
- Weather resistance: Resistant to oxidation and moisture erosion, maintaining waterproofing effectiveness over the long term even in harsh climates.
- High elasticity: The coating film has a certain degree of elasticity (elongation at break ≥352%), adapting to minor substrate deformations and resisting cracking.
- Excellent waterproof ability: Effectively prevents water penetration, providing reliable waterproofing with impermeability tested at 0.3 MPa for 120 minutes.
- Customizable colors: BOSLAI supports OEM polyurethane waterproof coating of any color, such as blue, gray, red, etc., to match project aesthetics or brand requirements.
Why Choose a Single Component Polyurethane Waterproof Coating?
This single component polyurethane waterproof coating requires no on-site mixing or metering — open the pail, stir, and apply. There is no risk of wrong A:B ratios that cause film failure on two-component jobs, which makes it a favorite among contractors and a low-inventory-risk product for waterproofing distributors.
As a water-based liquid waterproofing membrane, it can be diluted with water for large-area spraying, adheres without primer, and is compatible with fiber mesh for reinforced zones. Whether your customers apply it in bathrooms, basements, or on exposed roof decks, one SKU covers all common scenarios — an important advantage when you source from a polyurethane waterproof coating supplier across long shipping distances.
Wholesale Supply and OEM Service from a PU Waterproof Coating Factory
BOSLAI supplies this water based polyurethane waterproof coating at competitive FOB pricing for importers, wholesalers, and hardware chains. Standard packaging is 18 kg or 50 kg pails, and we support custom packaging sizes, private-label printing, and color customization (blue, grey, red, or any color you require) for brands building their own product lines.
Every wholesale order ships with full export documentation — TDS, MSDS, and COA — plus DG classification support for smooth customs clearance. If you are looking for a polyurethane waterproof coating manufacturer that treats distributors as long-term partners rather than one-time buyers, request free samples and test the film quality on your actual substrate before committing to bulk orders.
Customization Service
Customization is available for product color, packaging design, and package sizes.
Request Sample
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FAQ
Q: Can water-based polyurethane waterproof coating be applied on wet or damp surfaces?
Yes. BOSLAI water-based polyurethane waterproof coating can be applied on damp cement substrates without needing to wait for full surface dryness. This significantly reduces construction time, especially in humid climates or basement environments where drying is difficult.
Q: Is water-based polyurethane waterproof coating safe for indoor applications?
Yes. BOSLAI water-based polyurethane coating is non-toxic, odorless, and eco-friendly. It contains no volatile organic compounds (VOCs) that pose health risks, making it suitable for bathrooms, kitchens, and other enclosed indoor spaces. Workers can apply it without respiratory protection.
Q: Can this coating be used for swimming pools and water tanks?
Yes, with proper finishing. BOSLAI water-based polyurethane coating is impermeable at 0.3 MPa for 120 minutes and can withstand submerged conditions up to 20 days. For permanent submersion applications such as swimming pools and water tanks, a concrete topping or tile layer must be applied over the coating film.
Q: How many coats are required, and what is the recommended coverage?
Two coats are recommended for standard waterproofing applications. Each 18kg pail covers approximately 13–15 m² per coat. For high-stress areas (basements, tunnels, long-term water exposure), three coats may be required. Allow 4 hours for surface drying and 8 hours for thorough drying between coats.
Q: What surfaces does BOSLAI water-based polyurethane coating adhere to?
BOSLAI water-based polyurethane coating bonds strongly to concrete, mortar, cement substrates, metal, tiles, glass, wood, and existing coating layers. Its bonding strength reaches ≥1.2 MPa. No primer is required on most standard cement surfaces.
Q: How to find a reliable waterproof coating supplier and exporter?
Check five things before ordering: TDS & specs — available before you order, not after. Specialization — a dedicated waterproofing manufacturer beats a general chemical trader. Samples — test on your actual substrate first. OEM capability — custom color, packaging, and labeling. Export compliance — MSDS, DG classification, and customs documents. BOSLAI meets all five: free samples, downloadable TDS, OEM support, and full export documentation.
Q: What is the difference between water-based and solvent-based polyurethane waterproof coating?
Water-based: VOC-free, safe for indoor use, lower odor, slower dry time, and easier cleanup with water. Solvent-based: faster dry, stronger odor, higher VOCs, more suitable for industrial settings. For importers serving residential and commercial construction markets, a single component water based polyurethane waterproof coating is easier to register, transport, and store than solvent-based alternatives.
Q: Who is a reliable polyurethane waterproof coating manufacturer in China?
BOSLAI is a water-based polyurethane waterproof coating manufacturer based in Hangzhou, China, exporting PU waterproof coating to distributors in 40+ countries. Every batch ships with TDS, MSDS, and COA documentation, and free samples are available for testing before bulk orders. As both a manufacturer and supplier, BOSLAI offers OEM private labeling, custom colors, and FOB pricing for importers and wholesalers.
Q: Does BOSLAI offer wholesale pricing and OEM service for this PU waterproof coating?
Yes. BOSLAI is a PU waterproof coating factory supporting wholesale FOB orders from one pallet upward, private-label packaging, custom colors, and customized pail sizes (18 kg / 50 kg or bespoke). Contact us for a distributor price list and free samples shipped with full export documentation.
Why Importers Choose BOSLAI?
As a dedicated water-based polyurethane waterproof coating manufacturer in China, BOSLAI supplies distributors and contractors across 40+ countries. Our water-based polyurethane formulation is produced in a 10,000-ton facility with strict batch-to-batch consistency. OEM clients receive private-label packaging, custom formulation adjustments, and full export documentation including TDS, MSDS, and COA. Whether you need a reliable polyurethane waterproof coating supplier for ongoing distribution, a liquid polyurethane waterproofing membrane for project supply, or a factory partner for branded product lines, BOSLAI delivers quality at competitive FOB pricing.
