Professional Guide: Mixing and Applying Two-Component JS Polymer Cementitious Coating

In commercial and civil engineering, Two-Component JS Polymer Cementitious Waterproof Coating is highly regarded for its seamless integration and powerful adhesion to concrete. Composed of Component A (advanced liquid polymer emulsion) and Component B (active cementitious mineral powder), this system forms a highly flexible yet rock-solid waterproof barrier. However, achieving its full chemical performance requires strict compliance with professional mixing and multi-layer brushing standards.

(Important Notice: YSROOM specializes in wholesale, customization, and OEM supply for global B2B procurement. Industrial Use Only. No Retail.)

echnical Video: Two-Component Mixing & Applicationhttps://youtube.com/shorts/fqKUzDGxK80?feature=share

Watch our laboratory and field engineers demonstrate the standard mechanical agitation process and cross-brushing methodology to eliminate pinholes.

Engineering-Standard Operating Procedures (SOP)

• Substrate Pre-Wetting (Mandatory): Clean the concrete surface thoroughly. Before coating, spray clean water to pre-wet the substrate until it is damp. There must be no pooling water. A dry concrete base will violently suck moisture out of the JS paste, causing chalking or micro-cracks.

• Strict Weight Ratio Mixing: Always pour the liquid polymer into the mixing bucket first, then slowly add the powder component. Never stir by hand. Use an electric mixer at 300-400 RPM for 3 to 5 minutes until a completely uniform, lump-free slurry is formed.

• Joint and Corner Reinforcement: Apply an extra layer of the mixed JS slurry to high-stress areas (corners, pipe roots, expansion joints) and embed a heavy-duty fiberglass reinforcement mesh.

• Multi-Layer Cross-Brushing: Apply the first coat evenly (approx. 0.6mm thickness). Wait for it to become completely dry to the touch (4-6 hours). Apply the second coat perpendicular (90 degrees) to the first coat. This crosswise motion guarantees full coverage without blind spots.

B2B Technical Q&A (Consultation Center)

• Q: Can we adjust the liquid-to-powder ratio on-site by adding water?A: We strictly advise against adding water to alter the ratio for type-II or type-III high-elasticity engineering projects. Altering the factory-set ratio drastically reduces the cured film's tensile strength and elongation metrics.

• Q: Why is the JS system preferred for swimming pools and tiling backings?A: Because it is cementitious. Standard tile adhesives and mortar beds form an organic, crystalline bond with the JS cured layer, preventing tile delamination or sagging common with pure synthetic rubbers.

• Wholesale Customized Supply by YSROOM

•  As an industrial-scale manufacturing enterprise, YSROOM offers scalable B2B production lines, rigorous lab testing (TDS/MSDS), and customized packing options for international distributors and large infrastructure projects. Contact our global engineering department to request bulk pricing and samples.