Cementitious Waterproof Coatings

Surface-applied waterproofing and protection systems for demanding construction applications.

Kesari Conchem’s cementitious waterproofing portfolio brings together polymer-modified coatings and related waterproofing systems for concrete, masonry, roofs, terraces, wet areas, water-retaining structures and repair applications. Selecting the right system depends on substrate condition, exposure, movement, waterproofing performance and finishing requirements. Each product is presented by its documented technology so specifiers and applicators can identify the most relevant solution.

Category Overview

What It Does

Cementitious waterproofing systems are applied to prepared construction substrates to reduce water penetration and protect surfaces against moisture-related deterioration. Within the supplied range, technologies include polymer-modified cementitious coatings, acrylic latex systems, SBR-based repair and waterproofing products, and protective exterior coatings.

Where It Is Used

Applications supported across the supplied documentation include terraces, roofs, sunken slabs, bathrooms, water tanks, basements, foundations, masonry walls, external surfaces, water-retaining structures, RCC repairs, bonding coats, floor repairs and selected below-grade or heavy-duty waterproofing locations.

Why It Matters

Water ingress, permeability, weak bonding, cracks and aggressive environmental exposure can reduce durability and create recurring repair. A correctly selected waterproofing coating or polymer system helps create a protective barrier, strengthen interfaces and support long-term performance when the substrate is properly prepared and the application sequence is followed.

Selection Considerations

Substrate type: concrete, masonry, plaster, screed or repair mortar.
Exposure: exterior weathering, continuous water contact, wet areas, basement or foundation conditions.
Movement and crack-bridging requirement.
Need for waterproofing, bonding, repair, decorative protection or a combination.
Surface preparation and SSD/dry-surface requirements stated in the relevant TDS.
Potable-water contact or chemical exposure only where specifically documented.
Protective screed, overcoating or finishing requirements after waterproofing.

Products

1.Kesari Aqua Con

Product Name			Kesari Aqua Con
Product Type / Technology			Styrene Acrylic Latex for Cementitious Waterproof Coating
Product Overview			A milky white specialty Styrene Acrylic Latex used with cement for waterproofing and external coatings, bonding and repair applications. It improves impermeability, workability and bond strength while supporting durable protection on prepared concrete and mortar substrates.
Key Benefits			• Improves water impermeability of mortar and concrete • Increases flexural, tensile and bond strength • UV unaffected and suitable for exterior applications • Supports old-to-new concrete bonding and repair mortar
Best Suited For			Terraces, sunken areas, chajjas, masonry walls, sloping RCC roofs and repair/bonding applications.
Primary Applications			• Terraces & chajjas • Sunken portions • External surface coatings • RCC patch repairs • Waterproofing mortar & concrete
Pack Size			1, 5, 26, 50 & 100 kg
Technical Highlight			Styrene Acrylic Latex \| UV unaffected

Download TDS

2. Kesari Aqua-Con Plus

Product Name			Kesari Aqua-Con Plus
Product Type / Technology			High-Performance Styrene Acrylic Waterproofing & Repair Latex
Product Overview			A high-solids Styrene Acrylic Latex for waterproof coatings, external coatings, RCC and floor repair mortar, and old-to-new concrete bonding. It improves impermeability, strength and durability while supporting waterproofing and repair on cementitious substrates.
Key Benefits			• Improves flexural, tensile and bond strength • Enhances impermeability and reduces shrinkage • Resists UV, sulphate and chloride exposure • Supports waterproofing, bonding and repair applications
Best Suited For			Terraces, external coatings, RCC repairs, floor repairs and cementitious bonding applications.
Primary Applications			• Terraces & sunken areas • External surfaces • RCC patch repairs • Floor repair mortar • Bonding coats
Pack Size			1, 5, 20, 50 & 100 kg
Technical Highlight			High-solids Styrene Acrylic Latex

Download TDS

3. Kesari Aqua Bright

Product Name			Kesari Aqua Bright
Product Type / Technology			Acrylic Protective Waterproof Decorative Exterior Coating
Product Overview			A flexible acrylic protective waterproof decorative coating for exterior masonry and concrete surfaces. It helps control moisture and seepage through hairline cracks while providing UV, weathering, anti-fungal and anti-algae resistance for long-term exterior protection.
Key Benefits			• Excellent UV and long-term weathering resistance • Protects against carbon dioxide, chloride and sulphate attack • Flexible coating with documented crack-bridging performance • Low dirt pickup with anti-fungal and anti-algae properties
Best Suited For			Exterior masonry, concrete, cement-sand render and exposed surfaces requiring waterproof decorative protection.
Primary Applications			• Exterior masonry walls • Concrete surfaces • Cement-sand rendering • Asbestos sheets • Rain-lashed walls & parapets
Pack Size			1, 5 & 30 kg
Technical Highlight			Single-component acrylic \| >2 mm crack-bridging test result in TDS

Download TDS

4. Kesari Flexi Proof

Product Name			Kesari Flexi Proof
Product Type / Technology			SBR Latex for Repairs and Waterproofing
Product Overview			An SBR latex system positioned for repairs, screeds, bonding coats and waterproofing applications. The brochure states that it improves bonding between old and new concrete, reduces water permeability and shrinkage, and supports reinforcement protection and durability.
Key Benefits			• Strong bonding between old and new concrete • Reduces water permeability and shrinkage cracks • Improves flexural, tensile and bond strength • Supports reinforcement protection and continuous-water durability
Best Suited For			Repair mortars, screeds, bonding coats and waterproofing-related repair applications.
Primary Applications			• Repairs • Screeds • Bonding coats • Waterproofing-related repair
Pack Size			5 kg / 20 kg
Technical Highlight			SBR-based bonding and repair system

Download TDS

5. Kesari Flexi Lock

Product Name			Kesari Flexi Lock
Product Type / Technology			Two-Pack Acrylic Polymer Modified Cementitious Coating
Product Overview			An elastomeric flexible, two-component polymer-modified cementitious coating for waterproofing concrete, masonry and other construction substrates. It protects against water penetration and aggressive ions while providing strong adhesion, flexibility and weathering resistance.
Key Benefits			• Protects against water, chloride, carbonation and sulphate ingress • Flexible enough to bridge hairline cracks • Approved for potable water contact in supplied TDS • Strong adhesion to concrete and masonry with UV durability
Best Suited For			Water-retaining structures, roofs, wet areas, basements, foundations and sunken slabs requiring flexible cementitious waterproofing.
Primary Applications			• Water tanks & retaining structures • Roofs & wet areas • Basements & foundations • Sunken slabs • Chajjas & parapets
Pack Size			Liquid 10 kg + Powder 23 kg
Technical Highlight			2K polymer-modified cementitious \| Potable-water contact documented

Download TDS

6. Kesari Hydrostop Ultra

Product Name			Kesari Hydrostop Ultra
Product Type / Technology			Two-Component Acrylic Polymer Modified Cementitious Waterproof Coating
Product Overview			A high-performance, elastomeric two-component cementitious coating designed to protect concrete, masonry and other construction substrates against water ingress. Its flexible formulation provides durable waterproofing for roofs, wet areas, water-retaining structures, basements and foundations.
Key Benefits			• Flexible coating bridges hairline cracks. • Protects against water penetration, chloride, carbonation and sulphate ions. • Approved for potable water contact. • Excellent adhesion to concrete and masonry with UV and weathering resistance.
Best Suited For			Heavy-duty waterproofing of roofs, wet areas, water-retaining structures and below-ground applications requiring flexible cementitious protection.
Primary Applications			• Roofs and terraces • Bathrooms and sunken slabs • Water tanks and water-retaining structures • Basements and foundations • Chajjas and parapet walls
Pack Size			40 kg total (Liquid: 20 kg + Powder: 20 kg)
Technical Highlight			Technical Highlight Two-component elastomeric cementitious system with 200–220% elongation and documented potable-water contact approval.

Download TDS

Specify the Right Waterproofing System Before You Apply

Different substrates and exposure conditions require different waterproofing technologies. Review the product TDS, confirm the application requirement and select the system that matches the project condition before execution.

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