UV-Resistant Aliphatic Spray Polyurea Coating
Two-Component Spray-Applied Waterproofing
Aliphatic Polyurea · UV-Resistant · Spray-Applied
YURU two-component aliphatic spray polyurea coating (WUVS-2) for waterproofing and protecting surfaces exposed to sunlight. Applications include roofs, exterior concrete, steel structures, and other projects where the coating remains weather-exposed.
The material is applied using professional heated spray equipment. Upon spraying, it reacts within seconds to form a continuous, flexible coating. Its aliphatic formulation renders it particularly suitable for outdoor applications where UV resistance constitutes an important project requirement.
Built for Exposed Waterproofing Work
UV Resistance for Exposed Surfaces
On exposed roofs and exterior structures, the waterproofing layer has to withstand regular sunlight and changing weather. WUVS-2 uses an aliphatic polyurea formulation developed for these conditions.
Seamless Waterproofing
Spraying allows the material to cover large areas without the overlaps found in sheet membranes. It also works on vertical and curved surfaces, although joints, edges, and penetrations still need proper waterproofing details.
Fast Reaction During Spraying
Yuru spray-applied polyurea waterproof coating has a gel time of ≤ 20 seconds, helping the coating build thickness without sagging on vertical surfaces. The quick reaction makes it practical for projects where coating application needs to move efficiently.
Strength and Flexibility
The coating has a tensile strength of 16.2 MPa, an elongation at break of 460%, and an adhesion strength of 3.0 MPa.
Technical Specifications
Reported inspection results and technical requirements from the product data sheet.
| Property | TDS Requirement | Test Result |
| Physical & Curing Properties | ||
| Solids Content | ≥ 98% | 99% |
| Gel Time | ≤ 45 s | 16 s |
| Tack-Free Time | ≤ 120 s | 20 s |
| Mechanical Properties | ||
| Tensile Strength | ≥ 16.0 MPa | 16.2 MPa |
| Elongation at Break | ≥ 450% | 460% |
| Tear Strength | ≥ 50 N/mm | 66 N/mm |
| Adhesion Strength | ≥ 2.5 MPa | 3.0 MPa |
| Waterproofing & Durability | ||
| Water Impermeability | 0.4 MPa / 2 h, watertight | Watertight |
| Water Absorption | ≤ 5.0% | 0.5% |
| Low-Temperature Flexibility | ≤ −40°C | −40°C, no cracks |
| Heat Aging at Constant Elongation | No cracks or deformation | No cracks or deformation |
YURU Spray Polyurea Recommended Applications
Outdoor waterproofing and protective coating applications.
Roofs & Exterior Walls
Exposed roofs, exterior concrete and facade restoration where UV resistance is required.
Bridges & Steel Structures
Bridges, metal pipelines, ship decks and structural steel platforms needing surface protection.
Industrial Floors & Workshops
Production workshops, warehouse floors and industrial platforms requiring protective coating.
Wastewater & Drainage
Treatment tanks, drainage ditches and waste-management structures, subject to chemical compatibility.
Sports Stands & Outdoor Areas
Stadium seating tiers, outdoor stands and recreation facilities needing waterproof surface protection.
Pools & Water Facilities
Water parks, swimming pools and aquaculture ponds where immersion and water-contact requirements are verified.
Application Suitability
Exposed roofs, exterior concrete and outdoor structures where UV-resistant waterproofing and professional spray application are required.
Additional Evaluation Required
Permanent immersion, chemical exposure, unusual substrates and projects with specific water-contact or color-retention requirements.
Application Requirements
Substrate conditions and spray settings for professional application.
Substrate & Site Conditions
Concrete Strength
C25 or higher
Concrete Moisture
Below 8%
Ambient Temperature
5–35°C
Relative Humidity
30–80%
Substrate Temperature
At least 5°C above dew point
Surface preparation: Concrete must be fully cured. Clean and repair the surface, level uneven areas, and prepare the required surface profile before spraying.
Mixing & Spray Settings
1:1
50–80°C
Equipment
Professional two-component spray equipment
Before Spraying
Stir Component A and B until uniform
Ventilation
Maintain ventilation; avoid strong winds
Recoat & Curing Guidance
12 h
Further work can generally proceed after about 12 hours under suitable conditions.
>24 h
Apply the specified primer before continuing if the interval exceeds 24 hours or rain interrupts the coating work.
≥1 day
Allow at least one day of curing under normal conditions for optimum coating performance.
Site Safety
Professional spray application requires suitable respiratory, eye and skin protection. Follow the product safety documentation and applicable site safety procedures.
Spray Polyurea Packaging & Storage
Practical information for ordering, storing and handling YURU spray polyurea coating before application.
Packaging
Supplied in 20 kg or 40 kg two-component sets.
Storage
Keep containers tightly sealed in a cool, dry and well-ventilated area, protected from direct sunlight, rain and ignition sources.
Shelf Life
Keep containers tightly sealed in a cool, dry and well-ventilated area, protected from direct sunlight, rain and ignition sources.
Material Planning
Estimate order quantities from the project area and specified coating thickness. Allow for spray losses and substrate irregularities; detailed consumption figures are available in the product data sheet.
For shipment, protect the packages from rain, sunlight and strong impacts. Confirm transport classification against the current SDS and destination regulations.
Manufacturer Supply & Custom Formulation Development
We supply YURU Spray Polyurea to overseas distributors and project buyers. Alongside regular production and private-label orders, we support product development based on customer requirements and reference samples.
Produced by YURU in Jiangsu, China
We manufacture waterproofing and protective coating materials and coordinate product specifications, packaging and production arrangements directly with our customers.
Flexible Bulk & Project Supply
Order quantities, packaging and delivery arrangements are reviewed around confirmed distributor and project requirements.
OEM / ODM Customization
We can discuss private labels, packaging, colors and formulation adjustments for different markets. Available options are confirmed before production.
Sample-Based R&D & Formulation Development
Our technical team can evaluate customer-supplied coating samples and develop formulations toward agreed performance targets. Development scope and final specifications depend on technical feasibility and testing.
For Custom Development
Share a reference sample, target properties, intended application and expected order quantity so our team can review the development requirements.
Frequently Asked Questions
Answers to common questions about application, outdoor exposure and custom product development.
Can YURU Spray Polyurea be applied by brush or roller?
No. This formulation is made for professional, heated two-component spray equipment. It is not intended for brush or roller application. We also offer a specialized UV-resistant polyurea waterproof coating designed for application by brush or roller.
Does UV resistance mean the coating will never yellow?
The aliphatic formulation is developed for outdoor UV exposure. This type of waterproof coating offers good durability, resistance to aging, and resistance to yellowing.
Can it be used in pools or wastewater treatment tanks?
Yes. Before specifying the coating, the project team should confirm immersion conditions, water chemistry, substrate preparation and any required water-contact approvals.
Can YURU develop a formulation from our reference sample?
Yes. Our technical team can evaluate a customer-provided coating sample and work toward agreed performance targets. Share the reference sample, intended application, required properties and expected order quantity. The development scope and final specifications are confirmed after technical review and testing.
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What our clients say
”From planning to delivery, it has been a smooth and gratifying transaction. The YURU Waterproof team is quickly responsive, and their products are top-grade! In the end, they deliver as promised, and more. We look forward to a long-term partnership with them.”