JS Polymer Waterproof Coating

JS polymer waterproof coating two-component set

Contractor Preferred

Two-Component Polymer-Cement System

Mix liquid polymer with cement powder to create a flexible, breathable waterproof coating. Bonds strongly to concrete and masonry substrates. The preferred choice for contractors doing bathroom, kitchen, and balcony waterproofing in residential and commercial projects. Non-toxic, odorless, eco-friendly.

Two-component system — mix and apply on site
Excellent adhesion to concrete, brick, and masonry
Breathable — allows moisture vapor to escape
Non-toxic, zero VOC, odorless — safe for indoor use
Can be tiled over directly — no need for additional bonding layer
Flexible formula handles minor structural movement
OEM/private label available

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Specifications

Technical Data

Product Type	Two-component polymer-cement (JS type)
Components	Component A: liquid polymer emulsion Component B: cement-based powder
Mix Ratio	A:B = 1:1 to 1:2 (by weight)
Elongation at Break	≥ 80% (Type II)
Tensile Strength	≥ 0.8 MPa
Water Resistance	0.3 MPa, 30 min no leakage
Drying Time	Surface dry 2-4 hours, full cure 7 days
Coverage	2.0-3.0 kg/m² (2-3 coats)
Application	Brush or trowel
Shelf Life	12 months (sealed, dry place)
Packaging	5kg / 10kg / 20kg sets
MOQ	50 sets

Applications

Where to Use JS Coating

Bathrooms & Kitchens

The standard waterproofing layer before tiling. Tiles adhere directly to cured JS coating — no extra bonding needed.

Balconies

Flexible coating handles thermal movement on exposed balconies. Tile-ready surface after curing.

Swimming Pools

Interior pool waterproofing before tiling. Non-toxic formula safe for water contact.

Roof Terraces

Breathable waterproof layer under tile or paving on accessible roof terraces.

Frequently Asked Questions

What does "two-component" mean for JS waterproof coating?

JS coating comes as two separate components: Component A (liquid polymer emulsion) and Component B (cement powder). You mix them on-site before application. This two-component system combines the flexibility of polymer with the durability of cement, providing superior adhesion and waterproofing.

Can you tile directly over JS waterproof coating?

Yes. This is a major advantage of JS coating — once cured, tiles can be applied directly using standard tile adhesive without any additional surface preparation. This makes it the preferred choice for bathroom and kitchen waterproofing under tile.

Is JS coating suitable for hot climates like the Middle East?

JS coating works in temperatures from -20°C to +60°C. For roofs exposed to extreme heat above 60°C, we recommend PU waterproof coating instead, which has a higher heat resistance of up to +80°C. JS coating is ideal for interior wet areas and shaded exterior applications.