Single-Component Polyurea Waterproof Coating & Primer

Excellent Weather Resistance & Surface Durability

Outdoor and industrial surfaces are regularly exposed to moisture, dust, temperature changes, and environmental contaminants. A protective coating needs to maintain its film integrity and adhesion under the intended service conditions.

PU919-01 forms a water-resistant protective layer on properly prepared substrates, helping reduce direct exposure to moisture and environmental dirt. Its weather-resistant characteristics make it suitable for selected architectural and industrial surface protection projects involving concrete, glass, and metal.

For exterior applications, substrate condition and exposure intensity should be evaluated before installation. Areas exposed to prolonged standing water, strong sunlight, or demanding environmental conditions may require additional coating layers or a compatible protective topcoat. The complete coating system should be selected according to the project's waterproofing and durability requirements.

Waterproof Protection & Moisture Resistance

Moisture can gradually affect concrete and other building materials, particularly around exposed surfaces and areas where water contact occurs regularly. Applying an appropriate protective coating helps reduce direct water exposure and makes the substrate easier to maintain.

This single component polyurea waterproof coating forms a continuous film over the prepared surface, providing a protective barrier against moisture and surface contamination. Its coating characteristics make it suitable for selected concrete surfaces, walls, metal panels, and other compatible substrates requiring water-resistant protection.

Unlike a conventional multi-component system, PU919-01 does not require separate hardener preparation. The ready-to-apply formulation also makes it easier to maintain consistent application across smaller treatment areas. Proper substrate preparation, uniform coverage, and sufficient curing time remain essential for achieving the intended protective result.

Strong Adhesion & Multi-Substrate Compatibility

Coating performance depends heavily on how well the material bonds to the underlying surface. Poor adhesion can lead to peeling, blistering, and premature coating failure, even when the applied material initially appears smooth.

PU919-01 can be applied to properly prepared concrete, glass, aluminum, stainless steel, and compatible engineering plastics, including PET, PVC, ABS, and PS. According to the reported ASTM D3359 adhesion test results, the coating achieved a 4B adhesion rating on glass, aluminum, stainless steel, and the specified plastic substrates.

Before application, remove oil, dust, loose particles, and other contaminants that may interfere with bonding. Surfaces should be clean and dry, with damaged or uneven areas repaired where necessary. For unlisted substrates or applications involving additional coating layers, a preliminary adhesion test is recommended.

This combination of substrate compatibility and adhesion performance makes PU919-01 suitable for a range of architectural, industrial, and specialized surface treatment applications.

Single-Component Formula, Fast Curing & Easy Application

PU919-01 uses a single-component, air-curing formulation, so there is no need to measure and combine a separate hardener before application. This reduces preparation steps and avoids errors associated with incorrect component ratios.

The material can be applied evenly with a roller onto a properly prepared surface. Its curing process takes place through exposure to air, allowing the coating to develop its protective film without specialized two-component mixing equipment.

Under suitable application conditions, the coating becomes touch-dry in approximately 90 minutes. Subsequent operations can generally begin after approximately 120 minutes. These intervals help contractors plan coating work more efficiently, although actual drying performance varies with temperature, humidity, film thickness, and substrate conditions.

For consistent results, apply the material in a controlled manner and avoid excessive coating thickness in a single pass.

How to Apply Single Component Polyurea Waterproof Coating

Step 1: Prepare the Substrate

Remove dust, oil, wax, loose particles, and other contaminants. Repair damaged areas and sand uneven surfaces where necessary. The substrate must be clean, dry, and structurally sound before coating.

Step 2: Check Application Conditions

Keep the working area clean and free from airborne dust. The recommended application relative humidity is 30%–75% RH. At temperatures below 15°C, leveling performance may decrease, potentially producing an uneven or orange-peel surface appearance.

Step 3: Apply the Coating

PU919-01 is ready to use and does not require a separate hardener. Apply the material evenly using a roller, maintaining consistent coverage across the prepared surface.

Step 4: Allow Sufficient Curing Time

Allow approximately 90 minutes for the surface to become touch-dry. Subsequent operations may begin after approximately 120 minutes under suitable conditions. Protect the newly coated surface from water, dust, foot traffic, and mechanical damage during initial curing.

OEM/ODM Customization & Private Label Solutions

JinHua supports OEM/ODM manufacturing for customers developing their own protective coating and waterproofing product lines. Available services include private-label packaging, customized product presentation, packaging specifications, and application-oriented product evaluation.

For distributors, contractors, and coating brands, product selection should take into account substrate compatibility, application methods, curing conditions, and the intended service environment. JinHua's technical team can assist with evaluating these requirements and identifying suitable coating solutions.

From product selection to bulk manufacturing and packaging coordination, we work with B2B customers to support their specific market and project requirements.

Important Precautions for Application

Proper handling and site conditions are important for achieving consistent coating adhesion and surface appearance.

Surface Preparation

The substrate must be clean, dry, and free from oil, wax, dust, and loose particles. Repair damaged areas before application. Poor preparation can result in pinholes, uneven coating, or reduced adhesion.

Temperature & Humidity

Maintain the recommended application humidity of 30%–75% RH. At temperatures below 15°C, the material's leveling performance may decrease, increasing the possibility of an orange-peel appearance.

Application Environment

Keep the work area free from airborne dust, debris, and insects during application and initial curing. Avoid unnecessary movement or activities that may contaminate the wet coating.

Protection During Curing

The coating reaches a touch-dry state in approximately 90 minutes, with subsequent operations possible after approximately 120 minutes under suitable conditions. Avoid water contact, foot traffic, heavy objects, and abrasion during initial curing.

Substrate Compatibility

For substrates not specifically listed in the product documentation, conduct a small-area adhesion test before full-scale application. Compatibility should also be verified when the primer is used beneath other coating materials.

Storage, Shelf Life & Safe Handling

Store PU919-01 in its original, tightly sealed container in a cool, dry, and dark environment. The recommended storage temperature is 5°C–28°C. Keep the product away from direct light, moisture, and excessive heat.

The unopened product has a shelf life of 12 months from the manufacturing date when stored under the specified conditions.

Because the formulation cures through exposure to air, prolonged exposure after opening may result in moisture absorption and changes in material performance. Use the remaining product as soon as possible and reseal the container immediately after use.

Wear suitable protective gloves, preferably nitrile gloves, and avoid direct contact with skin and eyes. Maintain appropriate ventilation during handling and application.

Why Choose JinHua as Your Waterproof Coating Manufacturer?

Shenzhen Jinhua Electronic Materials Co., Ltd. specializes in resin materials and protective coating solutions for industrial and commercial customers. Our manufacturing operations cover a range of resin and coating products, supported by product development, production management, and quality control.

With a 20,000 m² manufacturing facility, 8 automated production lines, and an annual production capacity exceeding 10,000 tons across our product portfolio, JinHua supports customers requiring consistent supply and flexible manufacturing arrangements.

Our team works with distributors, coating brands, and industrial buyers on product selection, application evaluation, and OEM/ODM requirements. Whether you are sourcing an existing coating formulation or developing a private-label product line, we can discuss the technical and production requirements of your project.

Looking for a Reliable Single Component Polyurea Waterproof Coating Supplier?

Whether you need a ready-to-use polyurea primer for concrete, glass, or metal surfaces, or are developing a private-label waterproof coating range, JinHua can provide product information, technical documentation, and OEM/ODM manufacturing support.

Contact our team to discuss your substrate requirements, application conditions, and bulk purchasing plans.

Email: sales@jinhuaglue.com