Waterproofing is the procedure of making the walls, bridges, swimming pools & structure waterproof or water-resistant. The waterproofing coatings are applied to cover the masonry of the building with waterproof substances or materials.

Waterproofing coatings act as impenetrable barriers on the surfaces of roofs, walls, & other structural items to prevent the passage of water from these surfaces.

The coatings increase the life span of structures and reduce maintenance costs. We have waterproofing materials and products such as polymer-modified acrylic and bituminous coatings.

We serve turnkey projects through turnkey waterproofing contractors.

We have provided waterproofing solutions for commercial and residential projects of established legacies. We offer the best waterproofing chemical solutions for external walls, terrace floors, overhead tanks, swimming pools, podium decks, roof gardens, parking decks, underground water tanks, house foundations, construction joints, STP tanks, other areas, etc.
POLYALK WP: Polymeric waterproofing coating
  • Roof slabs – flat or sloping, chajjas, folded plate roofs, vaulted roofs, domes, etc.
  • Flooring, external walls
  • Sunk and non-sunk portions of bathrooms, toilets, balconies, etc.
  • Overhead or underground water tanks and other large reservoirs
  • Mortars for filling joints of C.I. or any other drainage pipes
  • As a protective coating to RCC floorings, substructures against sulphate attacks
  • It can be easily mixed with cement forming an impermeable co-matrix film
  • Alkaline and compatible with concrete
  • It does not facilitate carbonation
  • It can be applied in moist and damp conditions, e.g., exteriors, and terraces in wet spells of monsoon
  • It can be applied in underground and/or overhead water tanks almost immediately after emptying
  • High flexural strength and extraordinary adhesion of the polymer
  • It can be used as a base waterproofing coat on external walls, and after curing, it can receive SUNEXT 8
  • Surface preparation of the surface to be waterproofing is very important.
  • Scrub and clean the surface
  • Remove laitance, dirt, paint, loose flakes, particles, foreign matter, etc.,
  • For cleaning, you can use a vacuum cleaner, a high-pressure water jet, wet sandblasting, or wire brushing
  • Ensure that the concrete surface possesses an open pore surface texture
  • Repair any faulty concrete in the form of cracks, honeycombing, etc.
  • Fill hairline cracks on plaster/mortar fill the same with POLYFILL AR as per specifications
  • Remove all curing compounds and sealers
  • Moisten the surface with a water jet 24 hours before applying POLYALK WP
  • Mix 1 part of POLYALK WP and 1 or 1.25 parts of fresh white or grey cement
  • Continuous hand-mixing to form a lump-free consistency may also be adequate
  • Keep the mix continuously stirred
  • Apply the slurry by brush/roller to the damp surface
  • Apply two/three more coats of similar slurry at 24 hrs intervals
  • Allow setting for 24-48 hours
  • Cure the coating for 2-3 days by sprinkling water on the vertical surface (external walls) three times a day
  • Use moist gunny bags on the horizontal surface (terraces, toilets, etc.)
  • Provide a protective screed/plaster for flat surfaces on the POLYALK WP coating
  • For external surfaces, provide a protective coating of SUNEXT 8
POLYALK WPB: Polymer-modified bituminous coating
  • Used as foundation coating for below-grade structural foundation walls, floor wall slabs
  • For ramp retaining walls, silos, copings, cornices.
  • Economical water barrier
  • Ready to use – requires no heating or thinning
  • Not affected by alkalis or organic matter in soils
  • Unaffected by temperature changes
  • No sagging or flowing on vertical surfaces
  • Repair any form of cracks, honeycombing, etc.
  • Fill the cracks with a mortar consisting of POLYALK EP
  • Cure the repaired cracks as per usual norms
  • Moisten the surface using a water jet 24 hours before applying POLYALK WPB
  • Apply 3 coats of POLYALK WPB in a continuous unbroken film, free from pinholes, at 24-hour intervals
  • Ensure that all the grooves and joints are entirely coated
  • Allow it to set for 48 hours
Polyalk WP+: Surface applied a two-component capillary waterproofing coating of crystalline type
  • Roof slabs – flat or sloping
  • Chajjas, folded plate roofs, vaulted roofs, domes, etc.
  • Flooring, external walls
  • The sunk portion of bathrooms, toilets, balconies, etc.
  • Overhead or underground water tanks and other large reservoirs
  • Swimming pools
  • Dams, canals, harbours
  • Basement rafts and retaining walls
  • High flexural strength and extraordinary adhesion
  • Protects concrete against carbonation
  • It can be applied in slightly moist conditions, e.g., exteriors, terraces, and chajjas in wet spells of monsoon
  • It can be applied in underground and/ or overhead water tanks immediately after emptying them
  • Crystalline action is reactivated by contact with water providing additional dormant protection
  • Remove laitance, dirt, paint, loose particles
  • Repair any faulty concrete or plastered surfaces before waterproofing treatment
  • Mix POLYALK WP+ in the ratio part a: part b 1:1.25 by weight using a low-speed stirrer to form a slurry
  • Apply the slurry by brush or spraying onto the damp surface
  • Apply two more coats (at right angles) of similar slurry at 24 hrs intervals
  • Allow setting for 48 hours
  • Cure the coating for 7 days by sprinkling water three times a day on the vertical surfaces
  • Cure the coating for 7 days using moist gunny bags on the horizontal surfaces
SUNKOTE WP+: Single component, UV resistant, elastomeric, high build, acrylic waterproof coating
  • All types of RCC surfaces such as roofs, chajjas, parapet walls and external walls, external walls sunken areas, toilets, etc. 
  • Can be used for flat as well as sloping roofs, existing and new 
  • High build, strong, thick, elastomeric, liquid-applied waterproofing membrane system
  • Makes for a highly elastic & resilient coating to withstand cracks up to 2 mm as well as accommodate thermal movements
  • Resistant to UV with anti-fungal properties
  • Higher tensile strength, tear resistance & adhesion to substrate
  • Non-toxic in nature and the membrane allows the concrete surface to breathe
  • Prepare the surface thoroughly by cleaning, washing, and removing dust, dirt, oil, grease, and loose particles. 
  • Damaged portions must be repaired with polymer-modified mortar in existing roofs. 
  • Prime the surface with POLYALK WP or SUNPRIME WP
  • After the primer is cured, apply two coats of SUNKOTE WP+ with an interval of 24 hours between coats
  • The second coat should be applied perpendicular to the first coat which ensures uniform masking & even application
  • Allow the membrane to cure for 24-48 hours and carry out a protective screed layer with adequate slope.
SUNSILOX PRIMER: Single component penetrating silane-siloxane primer
  • To treat concrete against ingress of water & waterborne salts
  • To minimize efflorescence in masonry structures
  • To create water repellence in bricks and concrete blocks
  • Single component, easy to use, cost-effective
  • Deep penetration in the substrate enhances long-lasting results
  • Transparent, non-staining
  • Excellent water-repellent characteristic
  • Excellent for anti-carbonation properties
  • Compatible with solvent-based and water-based surface coatings
  • Chemical resistance to fuels and oils
  • Stir the contents & use SUNSILOX PRIMER directly
  • Do not dilute with water or solvents
  • Apply a single coat using a brush or low-pressure spray
  • Allow it to dry for 12 – 16 hrs
  • Cure the surface thoroughly before applying paint over it
SUNBITUPRIME: Bituminous primer coating
  • Cooling tower walls
  • Foundation coating, walls, floor walls, slabs, ramp retaining walls, silos, copings, cornices
  • Protective coating – concrete structures, stone, brick, iron and steel, asbestos cement, concrete screeds and sand cement surface.
  • Resists low concentrations of acids and alkalis, etc.
  • Excellent substrate bond (concrete, screed mortar)
  • A strong bond with old bituminous substrates
  • Effective surface activation for waterproofing sheet membrane
  • Specifically designed for tropical conditions
  • Economical water barrier with chemical resistance, adhesion, and moisture compatibility
  • Ready to use, no heating or thinning required
  • Unaffected by alkalis or organic matter in soils
  • No sagging or flowing on vertical surfaces
  • Surface preparation is crucial for adhesion and coating lifespan.
  • Repair any concrete faults like cracks or honeycombing.
  • Remove laitance, dirt, paint, loose flakes, or foreign matter using vacuum cleaner, high-pressure water jet, wet sandblasting, or wire brushing.
  • Ensure the concrete surface has an open surface texture.
  • Mix SUNBITUPRIME with a low-speed stirrer to achieve lump-free consistency.
  • Apply the first coat as a primer with the brush on a damp surface.
  • Let it dry completely, ensuring full coverage of grooves and joints.
  • Allow 24-48 hours of air curing for complete drying.
  • Slight dampness is acceptable due to the coating’s moisture compatibility.
  • Proceed with a membrane system or liquid-applied coating as needed.
POLYCOAT TST: Transparent elastomeric waterproofing decorative coating
  • Coating for concrete, plaster, stone, masonry, etc.
  • Waterproofing of external walls
  • Waterproofing of chemical plants and machinery
  • Waterproofing of overhead and underground water tanks
  • Waterproofing of general chemical plants
  • Protection of concrete structures against chemical attack or contamination.
  • Waterproofing of jetties, sewage plants, and other underwater installations.
  • Joint sealing for both new and repaired pipes
  • Coating of concrete and steel pipelines carrying potable water, raw water, or effluents.
  • Transparent, non-staining
  • Excellent water-repellent characteristic
  • Excellent for anti-carbonation properties
  • Compatible with solvent-based and water-based surface coatings
  • Chemical resistance to fuels and oils
  • Waterproof and decorative exteriors
  • No need for painting, saving expenses
  • Resistant to fungus and moss during monsoons
  • Long-lasting appearance
  • UV-resistant shades (off-white, ivory, grey, terracotta)
  • Protection against salt penetration in marine environments
  • Can be made fire-resistant/retardant
  • Resistant to various chemicals, including acids and alkalis
  • Protects underground structures from attack by groundwater sulphates and chlorides
  • Inhibits bacterial growth, suitable for hospital interiors
  • Good resistance to normal wear and tear

Surface Preparation:

  • Clean the surface thoroughly to remove dirt, loose particles, flaking paint, etc. using a brush and water jet.
  • Scrub the surface down to the original hard bare surface.
  • Check the surface for cracks or openings.
  • Fill cracks with POLYFILL AR, and use POLYALK EP mortar for specialised cracks.


  • Stir the contents of the container well for at least 15 minutes to achieve uniform consistency.
  • Apply using a brush, roller, or spray.
  • Allow the primer coat to dry and set for 4-6 hours.
  • Apply two or three coats of POLYCOAT TST, with a 24-hour interval between each coat as recommended.
  • Let the final coat set for 3 days.
  • Protect the coating from dust, dirt, water, etc., throughout the application and setting period.
  • Remove all scales, rust, and grease from steel surfaces.
  • In the case of steel surfaces, all scales, rust and grease should be removed.
POLYKOTE 2C: 2K cementitious, elastomeric waterproof coating
  • Roof slabs: flat or sloping, chajjas
  • Folded plate roofs, vaulted roofs, domes
  • A sunken portion of bathrooms, toilets, balconies, etc
  • Water retaining structures with movement
  • Overhead or underground drinking water tanks and large reservoirs
  • Protection of concrete surfaces from water, carbonation, deicing salts
  • Easy to mix and apply
  • Retains flexibility when submerged
  • Good chemical resistance (soft water, domestic wastewater, manure, etc.)
  • Moderately aggressive to the mineral substrate
  • Excellent adhesion to porous and non-porous surfaces
  • Non-toxic, suitable for contact with potable drinking water
  • Breathable, allowing the substrate to breathe while repelling water
  • Provides CO2 barrier and anti-carbonation benefits
  • Resists occasional foot traffic
  • Can be reinforced with polypropylene or glass fabric
  • Can be applied to 24-hour-old concrete for immediate protection.
  • Apply POLYKOTE 2C to the pre-dampened surface.
  • Use more dampening on high-suction substrates, but avoid free-standing water.
  • Apply with a brush or broom within 30 to 45 minutes or less under hot weather conditions.
  • First Coat: Brush or broom firmly onto a dampened surface, avoiding spreading too thinly.
  • Second Coat: Allow overnight curing, dampen the first coat, remove excess moisture, and apply in the opposite direction.
  • Reinforcing mesh: Use 100% virgin polypropylene woven mesh. Embed in a thick base layer of approximately 0.5 mm thickness, cover with the first coat while wet. Ensure minimum 200 mm width for cracks, joints, and junctions.
What are the different types of waterproofing coats?

There are different types of waterproofing coatings including acrylic elastomeric coatings, polyurethane coatings, polymer-cementitious coatings, epoxy coatings etc. Choosing the right type depends on your specific needs, surface material, budget, and skills. Always consult the manufacturer’s instructions and research before applying any waterproofing coat.

What chemical is used for waterproofing?

Waterproofing chemicals come in many forms, but some widely used chemicals are acrylic polymers and polyurethanes. They can form flexible, durable membranes ideal for roofs and exposed surfaces. The best choice depends on the specific application and material being protected.

Which waterproofing is best for the outside walls?

The best waterproofing for outside walls depends on your needs. Factors like budget, surface type, etc, should be considered. Elastomeric waterproofing is flexible for accommodating cracks and movement. Polymeric-cementitious waterproofing coatings are strong and durable and are great for smaller wet areas while being versatile and long-lasting.

Is epoxy coating waterproofing?
Epoxy can be waterproof, but depends on type and application. Some epoxies offer excellent water resistance for floors, countertops, and specific surfaces. However, not all are designed for exposed walls or extreme water exposure. Choose specific waterproofing epoxies and ensure proper application for best results.
What is PU coating?
PU coating, or polyurethane coating, is a type of resin used to make waterproofing coatings. It is known for its flexibility, and resistance to abrasion, chemicals, and water. This coating enhances material lifespan and is widely used in outdoor gear, furniture, and flooring for its robustness and aesthetic appeal.