Bathrooms and Kitchens
Waterproofing on prepared concrete or cementitious floors and walls beneath a compatible screed or tile finish.
JS Polymer Cement Waterproof Coating
Tianyuan supplies two-component JS polymer cement waterproof coating in Type I, Type II and Type III grades. The liquid polymer and cement-based powder are mixed on site to form a coating for concrete and other suitable mineral substrates. Compare the grade data below, then send your substrate, application area and required packing for a project quotation.
Two-Component JS CoatingType I / II / IIILiquid + PowderFor Protected SystemsFactory-Direct Supply
For project-specific pricing, send your technical requirements and destination port.
Direct Supply OEM Labeling Technical Support
Quick specifications
- Product Form
- Two-component polymer emulsion and cement-based powder
- Available Grades
- Type I / Type II / Type III
- Liquid : Powder Ratio
- Type I 1:1.2; Type II 1:1.5 by weight
- Solid Content
- ≥70% for Type I, II and III
- Tensile Strength
- Type I ≥1.2 MPa; Type II / III ≥1.8 MPa
- Elongation at Break
- Type I ≥200%; Type II ≥80%; Type III ≥30%
- Adhesion Strength
- Type I ≥0.5 MPa; Type II ≥0.7 MPa; Type III ≥1.0 MPa
- Watertightness
- No leakage at 0.3 MPa for 30 minutes
Product overview
Select the grade for the substrate and movement
JS polymer cement waterproof coating combines a liquid polymer component with a cement-based powder. The three listed grades have different performance profiles: Type I emphasizes elongation, Type II balances elongation and strength, and Type III has the highest listed adhesion strength. The comparison above helps a procurement team choose a starting grade before requesting a project quotation.
The coating is intended for prepared mineral substrates in a designed waterproofing assembly. Bathrooms, kitchens, below-grade walls and protected balcony or roof areas place different demands on movement accommodation, water exposure and the final protective layer. Share those conditions with the required quantity and destination so the offered grade, packing and installation documents match the job.
For a project that calls for a more elastic single-component liquid system, compare the polyurethane waterproof coating.
Applications
Balconies and Protected Roof Areas
Type I can be considered where movement is a concern, within an assembly that protects the coating from direct exposure and traffic.
Below-Grade Concrete
Coating on prepared basement walls and other mineral surfaces before the specified protection and backfill work.
Water-Retaining Structures
Type II or III may be selected for project-designed water-retaining work. State the water exposure, protective finish and required approval in your inquiry.
Key benefits
Three Clear Grade Profiles
Compare elongation, tensile strength and adhesion side by side instead of selecting a JS coating by price alone.
Designed for Mineral Substrates
The cement-containing system is suited to prepared concrete and mortar surfaces in protected waterproofing assemblies.
Liquid and Powder Supplied Together
The two components are combined at the grade-specific ratio before application, helping the buyer specify the correct kit and packing list.
Coverage Around Details
Brush or roller application can follow corners, drains and pipe penetrations; reinforce movement joints and critical details according to the system design.
Technical specifications
Type I, Type II and Type III grade performance specifications
| Test Item | Unit | Type I | Type II | Type III |
|---|---|---|---|---|
| Solid content | % | ≥70 | ≥70 | ≥70 |
| Tensile strength | MPa | ≥1.2 | ≥1.8 | ≥1.8 |
| Elongation at break | % | ≥200 | ≥80 | ≥30 |
| Adhesion strength | MPa | ≥0.5 | ≥0.7 | ≥1.0 |
| Adhesion to damp substrate | MPa | ≥0.5 | ≥0.7 | ≥1.0 |
| Watertightness at 0.3 MPa / 30 min | Result | No leakage | No leakage | No leakage |
| Low-temperature flexibility at -10°C | 10 mm mandrel | No crack | — | — |
| Mortar reverse-side anti-permeability | MPa | — | ≥0.6 | ≥0.6 |
Swipe to view the full table →
Installation guide
View documents ↓Prepare the Mineral Substrate
Remove loose material, dust and oil. Repair defects and detail corners, drains and penetrations before coating. A damp substrate may be suitable, but remove standing water and active leaks.
Mix the Grade-Specific Components
Measure the liquid and powder for the selected grade. Place the liquid in a clean container, add the powder gradually and mix until uniform. Use the mixed material within the working time stated for the supplied formulation.
Treat Details, Then Apply the Field Coats
Coat junctions and penetrations first, adding reinforcement where the design requires it. Apply successive thin field coats without pinholes and allow each coat to set before the next.
Protect the Completed Layer
Allow the coating to cure before installing screed, tile or other protection. Select adhesives and the finished assembly for the substrate and project conditions.
Packaging & OEM
Grade-Specific Two-Part Packing
Liquid is supplied in sealed buckets and powder in moisture-protected bags. The 20 kg liquid plus 30 kg powder set matches the listed Type II 1:1.5 ratio; request the packing list for Type I or III.
Storage and Transport
Keep the liquid from freezing and protect the powder from moisture. Store unopened components in a shaded, dry location and follow the batch label for shelf life.
Technical downloads
JS Coating Technical Data Sheet
Request via contact form
JS Coating Application Guide
Request via contact form
Related product
Frequently asked questions
Which JS grade should I request?
Type I has ≥200% elongation and ≥1.2 MPa tensile strength. Type II has ≥80% elongation and ≥1.8 MPa tensile strength. Type III has ≥30% elongation and ≥1.0 MPa adhesion strength. Send the substrate, expected movement and water exposure so the quoted grade fits your assembly.
What are the liquid-to-powder mixing ratios?
The listed ratios by weight are 1:1.2 for Type I and 1:1.5 for Type II. For Type III, request the mixing instructions for the offered formulation. Use the ratio on the supplied kit rather than changing it on site.
Can the coating be applied to damp concrete?
A sound, clean, damp mineral substrate may be suitable. Remove puddles and stop active water ingress before application; prepare joints and defects as part of the waterproofing system.
Can tile be installed above JS coating?
A compatible screed or tile system may be installed after the coating has cured. The adhesive, any primer and the curing interval depend on the substrate and selected system; include the intended finish in your inquiry.
Can Type II or III be used for pools or tanks?
The listed Type II and III grades include a mortar reverse-side anti-permeability index of ≥0.6 MPa. Send the water depth, exposure, finish and required approvals so the complete system can be specified. Potable-water contact requires the applicable project approval.
What should I send for a quotation?
Tell us the application area, substrate, required grade or performance, project quantity, destination, packaging preference and any standard or document required by the tender. We can then quote the matching two-part configuration.
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