BOSLAI Polymer Modified Bitumen Waterproof Coating (As known as Liquid Asphalt Waterproofing Membrane or Liquid Rubber Waterproofing Paint) is a highly elastic waterproof coating made from emulsified asphalt as the base material, modified and toughened with aqueous high-molecular polymer, and enhanced with mineral materials. It is produced through a scientific formula. The coating is highly elastic, adhesive, and UV-resistant. It is simpler and more convenient than traditional torch on membrane, it’s also called liquid waterproofing membrane. Additionally, it is not restricted by the complex shapes of the base layer and can form a continuous, seamless, high-elastic waterproof membrane.
Single-component / Eco friendly / OEM Accepted / Weather resistance / Excellent Elasticity
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 |
| Solid Content, % | 51 |
| Heat Resistance | No flow, sliding, or dripping at 110°C |
| Elongation at Break, % | 1071 |
| Low-Temperature Flexibility | No cracks at -35°C |
| Surface Drying, h | 8 |
| Thorough Drying, h | 23 |
| Water Resistance | 0.10 MPa, 30 minutes: No water leakage |
| Bonding Strength, MPa | 0.35 |
DOWNLOAD TDS
TDS_Polymer Modified Bitumen Waterproof Coating.pdf
ADVANTAGES
As one of the premier choices for roof waterproof coating, BOSLAI polymer modified bitumen waterproof coating offers 6 core advantages that make it versatile for both indoor and outdoor applications:
- Strong adhesion: It bonds firmly to concrete surfaces, forming an elastic and weather-resistant waterproof membrane.
- High elasticity and weather resistance: It has excellent weather resistance, with higher strength and better durability than most general waterproof coatings, that is why it is called liquid rubber waterproofing paint.
- Wide temperature adaptability: Effective in both low and high temperatures, with stable performance.
- UV-resistant: It can withstand prolonged exposure to sunlight without cracking.
- Wide applicability: Suitable for both wet and dry surfaces, with strong bonding strength.
- Convenient to use: Simply open the lid and stir before use.
Liquid Rubber vs. Torch-On Bitumen Membrane: Why Buyers Are Switching
Torch-applied bitumen membranes dominate waterproofing budgets worldwide, but liquid rubber waterproofing paint is replacing them fast on renovation and detail-heavy jobs:
No open flame — cold applied by brush, roller, or sprayer; safe on occupied buildings. No seams — the biggest leak risk on torch-on jobs is the overlap; liquid asphalt waterproofing forms one seamless film. Complex shapes handled easily — pipe penetrations, upturns, and corners need no cutting or splicing. Fewer labor skills required — one applicator can cover 100 m² in half a day.
For waterproofing distributors, that means a bituminous waterproof coating you can sell to both renovation contractors and new-build projects with one SKU.
Wholesale Supply and OEM Service from a Bitumen Waterproof Coating Factory
BOSLAI supplies polymer modified bitumen waterproof coating at competitive FOB pricing for importers, wholesalers, and hardware chains. Standard packaging is 18 kg or 50 kg pails, with custom pail sizes, private-label printing, and color customization available 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 bituminous waterproof coating supplier that treats distributors as long-term partners, request free samples and test the liquid rubber film 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 bitumen waterproof coating be applied on wet surfaces?
Yes. BOSLAI polymer modified bitumen waterproof coating is water-based and can be applied on slightly damp cement substrates without waiting for full surface dryness. No standing water should be present. This makes it practical for basement and ground-level applications where drying time is limited.
Q: Is this bitumen coating suitable for outdoor use and UV exposure?
Yes. This product is UV-resistant and can withstand prolonged sunlight exposure without cracking or degradation. It can be left exposed on rooftops, terraces, and exterior walls without a protective covering. It also resists standing water for up to 20 days, making it reliable for flat roof areas after rain.
Q: What is the minimum application temperature for this waterproof coating?
The recommended application temperature is 5°C to 35°C. Within this range, the coating forms a proper film with optimal adhesion and flexibility. It passes low-temperature flexibility testing at -35°C with no cracks, and heat resistance testing at 110°C without flow or dripping — making it suitable for both cold and hot climate zones.
Q: How many coats are required, and what is the recommended coverage?
Two coats are recommended for standard waterproofing applications. Each 18 kg pail covers approximately 13–15 m² per coat. For high-stress areas (basements, tunnels, long-term water exposure), three coats may be required. Allow [8] hours for surface drying and [23] hours for thorough drying between coats — refer to the downloadable TDS for full curing schedules.
Q: Can I customize the packaging, branding, and label design?
Yes. We offer OEM and private label services including custom pail sizes (20 kg or 50 kg), branding, and label design. We have export experience across Southeast Asia, the Middle East, Africa, Europe, and North America. Send us your target market and packaging requirements for a customized quotation.
Q: How to find a reliable bitumen waterproof coating supplier?
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 are the application methods and substrates BOSLAI bitumen waterproof coating bonds to?
BOSLAI bitumen waterproof coating can be applied by sprayer, roller, brush, or scraper. It bonds directly to concrete, metal, tiles, glass, wood, and existing coating layers — no primer required on standard cement surfaces. It can be diluted with water for easier application on large areas. Compatible with fiber mesh for reinforced waterproofing on high-stress zones.
Q: What is the difference between polymer modified bitumen waterproof coating and polyurethane waterproof coating?
Both are liquid-applied waterproof coatings. Polymer modified bitumen coating (liquid rubber) is asphalt-based: lowest cost, extremely high elongation (1071%), ideal for large-area roofs, basements, and infrastructure. Polyurethane coating is polymer-based: higher tensile strength and better wear resistance, ideal for exposed rooftops, bathrooms, and water tanks with heavier traffic. Many BOSLAI distributors carry both to cover the full price-performance range. See our water-based polyurethane waterproof coating page for that product’s specifications.
Q: Who is a reliable bitumen waterproof coating manufacturer in China?
BOSLAI is a polymer modified bitumen waterproof coating manufacturer based in Hangzhou, China, exporting liquid rubber waterproofing products to distributors across 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.
Why Choose BOSLAI as Your Bitumen Waterproof Coating Supplier?
As a specialized manufacturer and global exporter of polymer modified bitumen waterproof coating, BOSLAI has supplied bituminous waterproof coating to distributors and contractors across Southeast Asia, the Middle East, Africa, Europe, and North America. Whether you are sourcing liquid waterproofing membrane for a residential project or bulk-ordering bitumen waterproof coating for infrastructure development, we provide consistent quality, competitive pricing, and full export documentation support.
Unlike general chemical traders, BOSLAI focuses exclusively on waterproofing materials. This means deeper formulation expertise, stricter quality control, and a product line built around real jobsite conditions. Our polymer modified bitumen waterproof coating is manufactured to meet international performance standards, with a solid content of 51%, elongation at break of 1071%, and heat resistance up to 110°C.
Every shipment includes MSDS and dangerous goods documentation for smooth customs clearance. We coordinate with experienced freight forwarders to ensure your bitumen waterproof coating arrives on time, compliant with local import regulations. We also support OEM and private label services — custom packaging sizes, color matching, and label design. Download our TDS or request a free sample to test on your substrate before placing a bulk order.
