Shandong Jiancheng Environmental Protection Technology Co., Ltd.
Shandong Jiancheng Environmental Protection Technology Co., Ltd.
Hand brushed polyurea HBPUA types
1. Single-component hand-brushed polyurea "JCHBPUA-001", is a single-component polyurea waterproof material ready to use. Its purpose is mainly waterproof and expansion joint filling.
2. Two-component hand-brushed polyurea "JCHBPUA-002" is a two-component polyurea material. Its main purpose is waterproof and corrosion-resistant. It can be used on outdoor concrete or tile foundation floors. Its performance is second only to sprayed polyurea "JCSPUA-001", with 300% elongation, excellent weather resistance and waterproof prformance.
3. Polyurea self-leveling "JCHBPUA-SL001" is a load-bearing polyurea floor material, suitable for indoor workshops and garage floors, or corrosive workshop floors. It has excellent physical and mechanical properties, the surface hardness can reach 7H, and it is waterproof and corrosion-resistant.
Application scenarios of hand-brushed polyurea HBPUA
Pools, outdoor concrete or tiled floors, reservoirs, workshops, terraces and other floors that require waterproofing.
How to use polyurea HBPUA by hand brushing
1. Base grinding, crack cutting treatment, and vacuum clean;
2. How to use the "JCEPDT-006" primer, apply the polyurea primer brush once, and there is whitening on the ground, and re-coat locally. "JCEPDT-006" is stirred evenly according to the label ratio, apply it evenly once with the medium-hair roller, and use it within 30 minutes.
3. How to use the sealing layer of the "JCEPZT-007" intermediate paint, and use a full batch of "JCEPZT-007" intermediate paint + quartz sand, stir evenly according to the label ratio, use a push knife to scrape it evenly, and use it within 30 minutes.
4. HBPUA is mixed evenly according to the label ratio and used within 20 minutes. The minimum unit consumption of all polyurea materials is 1.8 kg per square meter.
Precautions for hand-brushing polyurea HBPUA
1. The ground must be completely closed and no air holes are allowed.
2. Mix HBPUA evenly, control the discharge speed, ensure that the two components are discharged at the same time, and there is no deviation in the material.
3. The two-pass construction interval should not exceed 48 hours. After it exceeds, it must be polished.
4. The ground moisture content should not exceed 8%.
Handmade polyurea waterproof coating: Comprehensive Guide
Handmade polyurea waterproof coating is a high-performance, hand-applied protective solution designed to prevent water infiltration and surface degradation across a variety of industrial, commercial, and residential applications. With fast curing, excellent elasticity, and strong adhesion, this coating creates a seamless, durable barrier that resists cracks, UV exposure, and chemical damage.
This guide provides detailed information on structural composition, testing standards, application tips, and cleaning methods, making it an essential reference for contractors, engineers, and facility managers looking for reliable waterproofing solutions.
The effectiveness of handmade polyurea waterproof coating comes from its advanced structural formulation:
| Component | Function / Description |
|---|---|
| Polyurea Resin Base | Provides elasticity, adhesion, and chemical resistance. |
| Curing Agent / Hardener | Initiates rapid polymerization, enabling fast curing and high durability. |
| Fillers / Additives | Enhance mechanical properties, UV stability, and wear resistance. |
| Primer Layer (Optional) | Improves adhesion to substrates such as concrete, steel, and aluminum. |
| Topcoat (Optional) | Provides additional UV protection, gloss, and chemical resistance. |
This composition allows the coating to form a continuous, seamless membrane that bridges micro-cracks and withstands harsh environmental conditions.
Handmade polyurea waterproof coating demonstrates outstanding performance metrics:
Waterproofing Efficiency: Blocks water penetration, preventing leaks and structural damage.
Elasticity: Bridges substrate cracks up to 2–3 mm without losing integrity.
Rapid Curing: Touch-dry within seconds; fully cured in 24 hours.
Chemical Resistance: Resistant to oils, acids, alkalis, and salts.
UV Resistance: Maintains color and structural properties under prolonged sunlight exposure.
Durability: Reduces maintenance frequency and extends the service life of protected surfaces.
| Parameter | Specification | Test Standard |
|---|---|---|
| Curing Time | 5–15 seconds | ASTM D5895 |
| Tensile Strength | 25–40 MPa | ASTM D412 |
| Elongation at Break | 400–600% | ASTM D412 |
| Shore Hardness (A) | 85–95 | ASTM D2240 |
| Adhesion to Substrate | >3.0 MPa | ASTM D4541 |
| Water Absorption | <0.5% | ASTM D570 |
| Service Temperature Range | -40°C to 150°C | ISO 817 |
| VOC Content | <50 g/L | EPA Method 24 |
To guarantee reliable performance and compliance, the coating is tested according to these international standards:
ASTM D5895 – Polyurea coating curing properties
ASTM D412 – Tensile strength and elongation
ASTM D2240 – Hardness measurement
ASTM D4541 – Adhesion testing
ASTM D570 – Water absorption
ISO 817 – Service temperature range
EPA Method 24 – VOC content compliance
Proper application is critical to achieving long-term performance:
Ensure the substrate is clean, dry, and free of dust, grease, or loose particles.
Repair large cracks or holes using suitable fillers before coating.
Store polyurea components at recommended temperatures to maintain viscosity.
Mix resin and curing agent according to manufacturer specifications.
Apply primer if recommended for improved adhesion.
Hand-apply the coating using brushes, rollers, or trowels for detailed areas.
Maintain a uniform thickness: 1.5–3 mm for floors, 2–4 mm for outdoor structures.
Coating becomes touch-dry within seconds.
Allow full cure within 24 hours before exposing the surface to heavy traffic or water.
Daily Maintenance:
Remove dirt, dust, and debris with sweeping or gentle rinsing.
Wipe up chemical spills immediately with mild detergent.
Weekly / Monthly Maintenance:
Inspect for scratches, minor abrasions, or signs of wear.
Check edges, corners, and high-stress areas for adhesion integrity.
Annual Maintenance:
Conduct full inspection of coating integrity, including UV and chemical exposure effects.
Touch up or recoat areas showing damage to ensure continuous protection.
| Problem | Possible Cause | Recommended Solution |
|---|---|---|
| Peeling or poor adhesion | Contaminated surface or insufficient primer | Clean substrate, apply primer, recoat |
| Bubbles or blisters | Trapped air or moisture during application | Remove affected area, reapply coating |
| Incomplete curing | Low temperature or incorrect mix ratio | Adjust temperature and mixing ratio |
| Cracking under stress | Substrate movement or insufficient thickness | Apply additional layer with correct thickness |
Roofs and Terraces: Provides waterproofing and UV protection for residential and commercial structures.
Industrial Floors: Protects concrete surfaces from water, chemicals, and abrasion.
Pipelines and Tanks: Ensures chemical resistance and waterproofing in industrial storage systems.
Bridges and Outdoor Structures: Shields steel and concrete from weathering and corrosion.
Specialty Projects: Can be applied in swimming pools, water features, and decorative architectural elements.
| Feature | Handmade Polyurea Waterproof Coating | Conventional Coatings |
|---|---|---|
| Curing Time | Seconds to minutes | Hours to days |
| Elasticity | High, bridges small cracks | Low |
| Waterproofing | Excellent | Moderate |
| Chemical Resistance | High | Moderate |
| UV Resistance | Excellent | Limited |
| Seamless Coverage | Yes | Often requires multiple layers |
| Maintenance | Minimal | Frequent |
Handmade polyurea waterproof coating is a high-performance, eco-friendly, and versatile solution for a wide range of industrial, commercial, and residential waterproofing applications. Its rapid curing, elasticity, chemical resistance, and strong adhesion make it ideal for roofs, floors, pipelines, tanks, and outdoor structures. Following proper surface preparation, application, and maintenance procedures ensures long-lasting protection and minimal repair costs.
This coating is an ideal choice for contractors, engineers, and facility managers seeking durable, seamless, and efficient waterproofing solutions.
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