Application method: Component B (polyamine part) is pre-mixed with pigment\/fillers, then both A (isocyanate) and B components are heated and pumped through dedicated plural-component high-pressure spray equipment (1:1 volume ratio). The two components meet at the spray gun, react instantly, gel in 3\u20138 seconds, and form a seamless, fully cured elastic waterproof membrane within minutes.<\/p>\n
![\"JY-SPA](\"https:\/\/great-ocean-waterproof.com\/wp-content\/uploads\/2025\/11\/JY-SPA-Spray-Polyurea-Waterproofing-Coating3_1.webp\")
<\/p>\n
Key characteristics:<\/p>\n
- \n
- Zero solvent, environmentally compliant<\/li>\n
- Extremely fast cure \u2013 walkable in <1 hour, full service typically within 24 hours<\/li>\n
- Excellent elasticity (typically 300\u2013600% elongation depending on grade)<\/li>\n
- High tensile strength and tear resistance<\/li>\n
- Good chemical and abrasion resistance<\/li>\n
- Seamless and fully bonded coating, even on complex geometries<\/li>\n
- Can be applied on concrete, metal, wood, existing membranes, etc.<\/li>\n<\/ul>\n
Typical applications include roofing, balconies, parking decks, water tanks, ponds, secondary containment, tunnels, basements, and industrial flooring where durable, flexible waterproofing is needed.<\/p>\n
The material is supplied in 200\u2013220 kg drums (A) and 200 kg drums (B) or IBC totes for large projects.<\/p>\n
This is a professional-grade spray polyurea system intended for use with proper heated plural-component equipment and trained applicators only.<\/p>\n
![\"JY-SPA](\"https:\/\/great-ocean-waterproof.com\/wp-content\/uploads\/2025\/11\/JY-SPA-Spray-Polyurea-Waterproofing-Coating2_1.webp\")
<\/p>\n\n\n
\n Color<\/td>\n Gray<\/td>\n Type<\/td>\n Double-component<\/td>\n Packaging form<\/td>\n Iron bucket<\/td>\n<\/tr>\n \n Physical state<\/td>\n Liquid<\/td>\n Specifications<\/td>\n 50 kg\/barrel<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Performance Characteristics<\/h3>\n
JY-SPA delivers consistent performance in demanding waterproofing applications, with properties validated through standard testing methods. Below is a summary of key characteristics based on the product’s formulation and field observations.<\/p>\n
Cure and Application Behavior<\/h4>\n
- \n
- Fast gel and cure time<\/strong>: Achieves initial gel in 3 seconds and tack-free strength in about 3 minutes, allowing continuous application on vertical surfaces without sagging or dripping.<\/li>\n
- Temperature and humidity tolerance<\/strong>: Performs reliably across a range of construction site conditions, from 5\u00b0C to 40\u00b0C and 30\u201385% relative humidity, without affecting cure rate or adhesion.<\/li>\n<\/ul>\n
Physical and Mechanical Properties<\/h4>\n
- \n
- Dense, seamless finish<\/strong>: Forms a continuous, pinhole-free coating with smooth texture, providing inherent barrier protection against water and corrosion.<\/li>\n
- Strength and flexibility<\/strong>: Offers tensile strength of 15\u201320 MPa and elongation at break of 300\u2013500% (Type I) or 400\u2013600% (Type II), accommodating substrate movement and thermal expansion.<\/li>\n
- Adhesion and durability<\/strong>: Bonds directly to prepared concrete, metal, and other substrates with pull-off adhesion >2.5 MPa; resists delamination under cyclic loading.<\/li>\n<\/ul>\n
Environmental and Long-Term Resistance<\/h4>\n
- \n
- Weather exposure<\/strong>: Aliphatic topcoat formulation maintains color stability and resists chalking, cracking, or peeling after extended UV exposure (e.g., >5 years in outdoor tests).<\/li>\n
- Chemical and abrasion resistance<\/strong>: Withstands mild acids, alkalis, and hydrocarbons; Taber abrasion loss <150 mg after 1000 cycles under 1000g load.<\/li>\n<\/ul>\n
Fire and Safety Features<\/h4>\n
- \n
- Flame retardancy<\/strong>: Classified as Class B per ASTM E84 (flame spread index <75); exhibits self-extinguishing behavior with low smoke development during exposure.<\/li>\n<\/ul>\n
These characteristics make JY-SPA suitable for horizontal and vertical surfaces in roofing, facades, and containment structures. Actual performance may vary based on substrate preparation, application thickness (typically 1.5\u20133 mm), and environmental factors. Consult technical data sheets for specific test results.<\/p>\n
![\"JY-SPA](\"https:\/\/great-ocean-waterproof.com\/wp-content\/uploads\/2025\/11\/JY-SPA-Spray-Polyurea-Waterproofing-Coating4_1-scaled.webp\")
<\/p>\nApplication Scope<\/h3>\n
JY-SPA is designed for professional spray application on a wide range of substrates and project types where long-term waterproofing, corrosion protection, and mechanical durability are required.<\/p>\n
Primary Application Areas<\/h4>\n
- \n
- Concrete waterproofing<\/strong> Flat and pitched roofs, podium decks, parking garages, terraces, balconies, basements, wet rooms, and foundation walls.<\/li>\n
- Water containment structures<\/strong> Drinking-water tanks, wastewater treatment plants, reservoirs, fish ponds, swimming pools, and irrigation channels.<\/li>\n
- Industrial and infrastructure projects<\/strong> Secondary containment bunds, chemical storage areas, tunnels, bridges, and marine structures.<\/li>\n
- Steel and metal protection<\/strong> Storage tanks (interior and exterior), pipelines (internal lining and external coating), steel piles, ship decks, and truck bed liners.<\/li>\n
- Flooring and traffic surfaces<\/strong> Parking decks, mechanical rooms, warehouses, and heavy-duty industrial floors (often combined with quartz broadcast or flake systems).<\/li>\n
- Renovation and repair<\/strong> Over-coating of aged but structurally sound membranes (PU, acrylic, bitumen, EPDM) without removal.<\/li>\n<\/ul>\n
Suitable Substrates<\/h4>\n
- \n
- Concrete and cementitious screeds<\/li>\n
- Steel and galvanized steel<\/li>\n
- Aluminium, copper, and stainless steel<\/li>\n
- Existing waterproofing membranes<\/li>\n
- Plywood and certain timber substrates (with suitable primer)<\/li>\n
- Rigid PU\/PIR insulation boards<\/li>\n<\/ul>\n
The system is regularly specified on national key projects in China (water conservancy, rail transit, petrochemical, and power facilities) and exported projects where fast return-to-service and seamless monolithic protection are critical.<\/p>\n
Note: Surface preparation (shot-blasting, grinding, or high-pressure washing) and correct priming are essential for long-term adhesion. Application thickness usually ranges from 1.5 mm to 4 mm depending on service conditions.<\/p>\n
![\"JY-SPA](\"https:\/\/great-ocean-waterproof.com\/wp-content\/uploads\/2025\/11\/JY-SPA-Spray-Polyurea-Waterproofing-Coating5_1.webp\")
<\/p>\nPerformance Index<\/h3>\n
\n\n
\n No.<\/th>\n Test Item<\/th>\n Indicator<\/th>\n<\/tr>\n \n \n<\/th>\n <\/th>\n \u2160<\/th>\n \u2161<\/th>\n<\/tr>\n<\/thead>\n \n 1<\/td>\n Solid content \/%<\/td>\n \u2265<\/td>\n 96<\/td>\n 98<\/td>\n<\/tr>\n \n 2<\/td>\n Gel time \/s<\/td>\n \u2264<\/td>\n 45<\/td>\n<\/tr>\n \n 3<\/td>\n Surface drying time \/s<\/td>\n \u2264<\/td>\n 120<\/td>\n<\/tr>\n \n 4<\/td>\n Tensile strength \/MPa<\/td>\n \u2265<\/td>\n 10.0<\/td>\n 16.0<\/td>\n<\/tr>\n \n 5<\/td>\n Elongation at break \/%<\/td>\n \u2265<\/td>\n 300<\/td>\n 450<\/td>\n<\/tr>\n \n 6<\/td>\n Tear strength \/(N\/mm)<\/td>\n \u2265<\/td>\n 40<\/td>\n 50<\/td>\n<\/tr>\n \n 7<\/td>\n Low-temperature flex \/\u2103<\/td>\n \u2264<\/td>\n -35<\/td>\n -40<\/td>\n<\/tr>\n \n 8<\/td>\n Impermeability<\/td>\n <\/td>\n 0.4MPa,2h,impermeable<\/td>\n<\/tr>\n \n 9<\/td>\n Heating expansion rate \/%<\/td>\n \u2264<\/td>\n 1.0<\/td>\n<\/tr>\n \n \u2264<\/td>\n 1.0<\/td>\n<\/tr>\n \n 10<\/td>\n Bond strength \/MPa<\/td>\n \u2265<\/td>\n 2.0<\/td>\n 2.5<\/td>\n<\/tr>\n \n 11<\/td>\n Water absorption rate \/%<\/td>\n \u2264<\/td>\n 5.0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Construction Description<\/h3>\n
JY-SPA is applied using high-pressure plural-component spray equipment (e.g., Graco Reactor series) at a 1:1 volume ratio, with components heated to 60\u201370\u00b0C and fluid pressures of 2,000\u20133,000 psi. The process requires trained applicators and follows standard surface preparation guidelines to ensure adhesion and performance. Below is a step-by-step outline based on established polyurea application practices.<\/p>\n
1. Surface Treatment<\/strong><\/p>\n
Remove contaminants such as oil, grease, dust, loose particles, and efflorescence from the substrate using high-pressure water jetting (min. 3,000 psi), mechanical grinding, or abrasive blasting (e.g., to CSP 3\u20135 profile per ICRI guidelines). Ensure the surface is dry, clean, and free of standing water or excessive moisture (substrate moisture content <4%). This step prevents defects like bubbling or delamination.<\/p>\n
2. Surface Repair<\/strong><\/p>\n
Address imperfections by filling cracks (>0.25 mm) with epoxy mortar or cementitious repair compounds, patching holes, and smoothing uneven areas. For substrates with height variations >3 mm, apply a leveling compound (e.g., polymer-modified cement) and allow full cure (typically 24\u201348 hours). Test repaired areas for soundness by tape adhesion or hammer sounding.<\/p>\n
3. Base Treatment<\/strong><\/p>\n
Apply a compatible primer (e.g., two-part epoxy or moisture-tolerant acrylic) at 0.1\u20130.2 mm wet film thickness to enhance adhesion and control surface porosity. Roll or brush the primer evenly, and allow it to achieve tack-free condition (2\u20134 hours at 20\u201325\u00b0C) before proceeding. Skip priming on clean, profiled metal or concrete if pull-off adhesion tests (>1.5 MPa) confirm suitability.<\/p>\n
4. Apply Main Coating<\/strong><\/p>\n
Mix and spray Components A (isocyanate) and B (polyamine resin) through the heated plural-component gun, where they impinge and react on the surface. Apply in 2\u20133 passes to achieve a total dry film thickness of 1.5\u20133 mm, ensuring uniform coverage without holidays (use wet mil gauge for monitoring). Gel time is 3\u20138 seconds; full cure occurs in minutes, allowing recoat within 10\u201330 seconds. Maintain ambient temperature of 5\u201340\u00b0C and relative humidity 30\u201385% for optimal results.<\/p>\n
5. Improve Details<\/strong><\/p>\n
After initial cure, reinforce critical areas such as corners, edges, joints, and terminations with additional spray passes or embedded geotextile fabric strips (for high-movement zones). Back-roll or touch-up pinholes if needed, ensuring seamless integration. This step addresses potential weak points identified during application.<\/p>\n
6. Coating Protection<\/strong><\/p>\n
For exposed applications, topcoat with an aliphatic polyurethane or UV-stable sealer (0.1\u20130.2 mm DFT) after 24 hours to enhance weather resistance and color retention. Apply anti-fouling agents for marine or water-contact surfaces, or broadcast aggregates for slip resistance on traffic decks. Omit if the coating is buried or covered.<\/p>\n
7. Inspection and Acceptance<\/strong><\/p>\n
Conduct final quality checks using a high-voltage holiday detector (spark tester at 10\u201320 kV for 2 mm DFT) to identify voids, along with adhesion pull-off tests (ASTM D4541) and thickness measurements (ASTM D4414). Verify cure by Shore A hardness (>80) and visual inspection for uniformity. Document results to confirm compliance with project specifications before handover.<\/p>\n
This process minimizes downtime, with surfaces typically traffic-ready in 1\u20132 hours and full service in 24 hours. Always refer to the JY-SPA technical data sheet for site-specific adjustments, and ensure compliance with local standards (e.g., GB\/T 23446-2009 for spray polyurea).<\/p>\n
![\"construction](\"https:\/\/great-ocean-waterproof.com\/wp-content\/uploads\/2025\/11\/construction-technology3_1.webp\")
<\/p>\nCustomer Reviews<\/h2>\n
Ahmed Al-Mansoori<\/strong> Project Manager, Dubai, UAE \u2013 Rooftop waterproofing (2024) We used JY-SPA on a 12,000 m\u00b2 commercial roof exposed to 50\u00b0C+ summer temperatures. The fast cure (walkable in under 1 hour) helped us finish ahead of schedule despite tight deadlines. After 14 months including one full summer, no blisters, cracks or leakage reported. The light-grey color option also reduced surface temperature noticeably. Solid performance for the price.<\/p>\n
Carlos Rivera<\/strong> Waterproofing Contractor, Bogot\u00e1, Colombia \u2013 Parking deck renovation (2025) Applied 2 mm of Type II over an old epoxy coating without removal. Adhesion was excellent after shot-blasting and primer. Crew liked that humidity didn\u2019t slow down the cure even when we worked early mornings at 85% RH. Abrasion resistance is holding up well under regular vehicle traffic. Only minor color fading on the top level after 9 months, expected without aliphatic topcoat.<\/p>\n
Li Wei<\/strong> Engineering Supervisor, Guangdong, China \u2013 Sewage treatment tank lining (2023) Used on three concrete digestion tanks (total 8,500 m\u00b2). The zero-VOC formula was required to meet local environmental regulations. Chemical resistance has been good against H\u2082S and diluted acids so far (24 months in service). Thickness control was easy with experienced operators. One small pinhole found during spark testing was fixed the same day. Overall reliable for wastewater projects.<\/p>\n
James O\u2019Connor<\/strong> Maintenance Manager, Queensland, Australia \u2013 Steel water tank internal lining (2024) Coated the inside of a 2.5 ML potable-water tank. NSF-certified primer + JY-SPA combination passed third-party potable-water approval. Application took 3 days instead of 2 weeks compared to previous epoxy system. No taste or odor issues after commissioning. Surface still looks new after 18 months.<\/p>\n
Maria Schmidt<\/strong> Architect, Hamburg, Germany \u2013 Green roof on residential building (2025) Specified Type I for root resistance and fast return-to-service. The seamless membrane bridged 4\u20135 mm cracks without additional reinforcement. Drainage layer and soil were placed the next day. Slight yellowing on south-facing edges after first summer, but no loss of waterproofing function. Good value compared to European pure polyurea brands.<\/p>\n
These reviews are based on actual project feedback received by Great Ocean Waterproof between 2023\u20132025. Performance may vary depending on surface preparation, application conditions and local climate conditions.<\/p>\n
![\"JY-SPA](\"https:\/\/great-ocean-waterproof.com\/wp-content\/uploads\/2025\/11\/JY-SPA-Spray-Polyurea-Waterproofing-Coating6_1.webp\")
<\/p>\nAbout the Manufacturer \u2013 Great Ocean Waterproof Technology Co., Ltd.<\/h3>\n
Great Ocean Waterproof Technology Co., Ltd. (formerly Weifang Juyang New Waterproof Material Co., Ltd.) was established in 1999 and is headquartered in Tai Tou Industrial Zone, Shouguang City \u2013 recognized as China\u2019s largest waterproofing material production base.<\/p>\n
The company operates a 26,000 m\u00b2 modern manufacturing facility equipped with multiple automated production lines for waterproof membranes, sheets, and liquid coatings. Current annual capacity exceeds 30 million m\u00b2 of polymer and asphalt membranes and 15,000 tons of waterproof coatings, including the JY-SPA Spray Polyurea Waterproofing Coating.<\/p>\n
Main product portfolio covers:<\/p>\n
- \n
- Polymer sheets (polyethylene polypropylene fiber, TPO, PVC, CPE, root-resistant series)<\/li>\n
- Modified-bitumen membranes (SBS\/APP, self-adhesive, root-barrier grades)<\/li>\n
- Liquid-applied systems (polyurethane, polymer-cement JS, rubberized asphalt, spray polyurea)<\/li>\n<\/ul>\n
The factory maintains complete in-house testing laboratories and has passed ISO 9001 quality management system certification. Products carry national industrial production licenses and are regularly inspected by authoritative Chinese testing institutions. JY-SPA and other key materials have obtained product type approval for railway, water conservancy and major infrastructure projects in China.<\/p>\n
With more than 25 years of specialization in waterproofing materials, Great Ocean supplies contractors and distributors in over 20 provinces across China and exports to Southeast Asia, Middle East, Africa, Australia and Europe. The company continues to focus on stable quality, competitive pricing and reliable technical support for professional waterproofing applications worldwide.<\/p>\n
![\"great](\"https:\/\/great-ocean-waterproof.com\/wp-content\/uploads\/2025\/11\/great-ocean-waterproof-factory_1.webp\")
<\/p>","protected":false},"excerpt":{"rendered":"JY-SPA Spray Polyurea Waterproofing Coating is a two-component, solvent-free, fast-curing elastic waterproof material produced by Great Ocean Waterproof in China. As a professional polyurea manufacturer and factory, we supply both Type I and Type II versions based on different physical requirements. Component A and B are mixed inside the spray gun of dedicated equipment, react instantly, and form a tough, fully elastic waterproof film on site. For technical data and factory price, contact us directly.<\/p>","protected":false},"featured_media":869,"template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[22],"product_tag":[],"class_list":{"0":"post-867","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-waterproof-coating","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/great-ocean-waterproof.com\/en_au\/wp-json\/wp\/v2\/product\/867","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/great-ocean-waterproof.com\/en_au\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/great-ocean-waterproof.com\/en_au\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/great-ocean-waterproof.com\/en_au\/wp-json\/wp\/v2\/media\/869"}],"wp:attachment":[{"href":"https:\/\/great-ocean-waterproof.com\/en_au\/wp-json\/wp\/v2\/media?parent=867"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/great-ocean-waterproof.com\/en_au\/wp-json\/wp\/v2\/product_brand?post=867"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/great-ocean-waterproof.com\/en_au\/wp-json\/wp\/v2\/product_cat?post=867"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/great-ocean-waterproof.com\/en_au\/wp-json\/wp\/v2\/product_tag?post=867"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
- Water containment structures<\/strong> Drinking-water tanks, wastewater treatment plants, reservoirs, fish ponds, swimming pools, and irrigation channels.<\/li>\n
- Concrete waterproofing<\/strong> Flat and pitched roofs, podium decks, parking garages, terraces, balconies, basements, wet rooms, and foundation walls.<\/li>\n
- Chemical and abrasion resistance<\/strong>: Withstands mild acids, alkalis, and hydrocarbons; Taber abrasion loss <150 mg after 1000 cycles under 1000g load.<\/li>\n<\/ul>\n
- Strength and flexibility<\/strong>: Offers tensile strength of 15\u201320 MPa and elongation at break of 300\u2013500% (Type I) or 400\u2013600% (Type II), accommodating substrate movement and thermal expansion.<\/li>\n
- Temperature and humidity tolerance<\/strong>: Performs reliably across a range of construction site conditions, from 5\u00b0C to 40\u00b0C and 30\u201385% relative humidity, without affecting cure rate or adhesion.<\/li>\n<\/ul>\n
- Fast gel and cure time<\/strong>: Achieves initial gel in 3 seconds and tack-free strength in about 3 minutes, allowing continuous application on vertical surfaces without sagging or dripping.<\/li>\n