JSW iBlok WaterStop Roof Coat – Exterior (Heat Reflective Waterproofing)

JSW iBlok WaterStop Roof Coat: Durable and Flexible Terrace Waterproofing

JSW iBlok WaterStop Roof Coat is a high-performance, single-component, water-based acrylic elastomeric coating designed specifically for the rigorous demands of terrace and roof waterproofing. This product forms a thick, seamless, and highly elastic membrane over your roof slab, providing long-lasting protection against heavy rainfall, high temperatures, and structural movement.

Its primary function is to seal the roof slab and bridge existing hairline cracks, preventing water penetration while reflecting solar heat. JSW iBlok WaterStop Roof Coat provides a comprehensive solution for leakage prevention and roof cooling, ensuring your home stays dry and comfortable.

Why Choose JSW iBlok WaterStop Roof Coat?

Terraces are the most vulnerable parts of a building. This product offers specific advantages for roof protection:

• High Elasticity (Crack Bridging): The elastomeric property allows the dry film to stretch and contract significantly with temperature changes, effectively bridging static hairline cracks (up to 2mm) without tearing.
• Seamless Membrane: Creates a monolithic waterproof layer across the entire roof, eliminating cold joints or seams where leaks typically start.
• Heat Reduction (Cool Roof): Available in light colours (typically White), the coating reflects UV rays and solar heat, keeping the roof slab cooler and reducing the internal temperature of the top floor.
• Water Resistance: Provides an impermeable barrier that resists standing water (ponding) better than standard exterior paints.

Key Features of JSW iBlok WaterStop Roof Coat

• Single Component: Ready to use directly from the can; no complex mixing required.
• High Build: Forms a thick film that provides superior waterproofing performance in fewer coats.
• Durability: Highly resistant to mild foot traffic and weathering effects like UV exposure and algae growth.
• Eco-Friendly: Water-based, non-toxic, and low-VOC formulation.

Recommended Application Areas

This elastomeric roof coating is critical for:

• Terrace and Roof Slabs: As the primary waterproofing membrane on concrete roofs.
• Parapet Walls: Extending the coating onto vertical parapet walls to prevent sideways seepage.
• Old Waterproofing Layers: Renewing the life of aged bituminous or acrylic coatings.
• North-Facing Walls: Protecting exterior walls prone to algae and constant dampness.

Technical Specifications: JSW iBlok WaterStop Roof Coat

How to Apply JSW iBlok WaterStop Roof Coat

Proper preparation is key to successful roof waterproofing:

1. Surface Preparation: Thoroughly clean the entire roof surface. Remove all loose material, old flaky paint, moss, and algae. Repair structural cracks with a cement mortar mix. The surface must be dry.
2. Priming: Apply a self-priming coat by diluting the JSW iBlok WaterStop Roof Coat with 25-30% clean water. Apply this thin coat with a roller or brush. Allow to dry for 6-8 hours.
3. First Coat (Undiluted): Apply the first full coat of undiluted JSW iBlok WaterStop Roof Coat perpendicular to the parapet wall.
4. Second Coat (Undiluted): Apply the second coat (undiluted) perpendicular to the first coat (cross-hatch pattern). A minimum of two full coats is mandatory.
5. Curing: Allow the coating to fully cure for 7 days before testing with standing water. Find detailed guidance on applying elastomeric cool roof coatings.

Frequently Asked Questions (FAQ)

Q: Can I use this on vertical walls?
A: Yes, it provides excellent weather protection and heat reduction when applied to vertical exterior walls.

Q: Do I need to remove old tiles before applying?
A: Yes, for permanent waterproofing, it is recommended to remove old tiles and waterproofing layers to treat the base concrete slab directly. If tiles are sound, consult the product’s technical sheet for guidance on using an adhesion promoter (primer) first.

Q: Can I use this over Damp Proof?
A: This product is typically used as a standalone waterproofing membrane or as the final coat in a system. Consult the JSW system guide for compatibility.