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Waterproofing | Membrane Coatings | Kochi | Ernakulam | Kerala

Waterproofing Membrane Coatings

Waterproofing is a method by which an item or area is made resistant to damage by water. Waterproofing is done to protect buildings or masonry structures from the effects of moisture/water present in the environment. The life of buildings and masonry structures can be prolonged by waterproofing them.

Waterproofing chemicals and methods of application differ from the area of application. Waterproofed areas can be broadly classified into internal and external areas. Internal areas include bathrooms, shower recesses, laundries, and toilets. And external waterproofed area extends to roofs, planter boxes, podiums, balconies, retaining walls, and swimming pools etc.

We are one of the leading companies offering a complete range of structural maintenance and waterproofing services /solutions to our clients from the residential and commercial sectors. To ensure long-lasting durability, an appropriate maintenance strategy should also be followed by the owners and their construction management team.

Waterproofing and protective coatings can be an important part of this strategy, to ensure a long service-life for new structures and also this helps to increase the durability of existing ones.

These services include Terrace & Roof Waterproofing, Bathroom & Toilet Leakage, Wall crack & Structural repairs and Damp proofing. Guarantees are provided for all works undertaken and range from one to six years depending on specification chosen. Our services can be designed to suit the individual requirements and budgetary constraints of our clients.


Basement of structure

Waterproofing of basement and below-grade parking structures can be done using crystalline waterproofing. The slurry for concrete substrates, it is economical and easy to apply.

Crystalline coatings penetrate deep into the capillary tracts/ shrinkage cracks and seal both positive and negative side of the concrete structure. It becomes an integral part of the concrete and is equally strong against negative side water pressure.

A reactive layer is formed of the concrete which allows the structure to self-heal shrinkage cracks under concrete when in contact with water. It also protects the basements against waterborne corrosive chemicals that can cause corrosion of reinforcement.

waterproofing for walls


Plastered surfaces develop cracks due to deterioration of plaster arising out of bad construction practices, inadequate curing, aggressive climatic conditions, etc. Cracks in plasters lead to water seepage. Hence a high-performance waterproof coating that would prevent seepage of water from the external walls to the interiors of the building shall be applied to the exterior wall plasterings.

Brick walls and structures are subjected to a wide range of exposure conditions. From normal atmospheric carbonation to the aggressive influences of polluted urban or industrial environments, plus marine atmospheres and other chemicals.

Acrylic or polyurethane-based protective coatings can be applied to walls. Many of these can be prevented and the life of the structures can be prolonged by the application of protective coatings for walls and masonry structures.

waterproofing for walls

Bathrooms and kitchen

Bathrooms and kitchen sink areas can be treated with acrylic polymer modified cementitious waterproofing coating system or can be treated with epoxy polyamide membrane/barrier coatings.

These types can be used as a seamless, impervious coating on the flat roof for both exposed and concealed waterproof coating requirements. They can also be used effectively in water retaining structures, underground concrete structures, pits, basins, sumps etc.

Acrylic polymer modified cementitious waterproofing coating can be used for crack-bridging, since it has good elastic properties. Some of the other advantages of these coatings are good impermeability against water ingress, highly water-resistant, arrest saltpetre and prevent carbonation.

Also, shows extremely good bonding properties with high abrasion resistance.

Balconies, decks

Buildings may be subjected to a wide variation of temperatures between day and night/ winter and summer conditions, or between different sides or surfaces of the structure. These frequent cycles result in thermal stresses and cracks.

Acrylic or polyurethane binders can be considered when the durability of a coating system is important. Waterborne polyurethane coating can give a higher performance in terms of durability than acrylic solvent-based coating. Properties such as sustainability, colour retention, UV light stability and CO² diffusion resistance after accelerated weathering are very impressive.

waterproofing roof

Terrace or roofs

One of the most important properties of a protective coating on concrete structures is its ability to prevent or reduce the diffusion of carbon dioxide into the exposed concrete. If CO² is allowed to penetrate the concrete, it will react with the free lime and the natural process of carbonation takes place and it gradually progresses inwards from the surface over time. Once it has reached the reinforcements it will start to corrode the steel bars.

If a roof is not waterproofed properly, it will lead to damp patches on the ceiling. In severe cases, water can seep down and this will result in leakages and moisture problems inside the rooms. An unhealthy roof which is exposed to severe weather conditions if not protected well in advance can cause damages to the reinforcements which will fall off in due course of time.

Acrylic waterproofing membrane containing cross-linking polymers are best suited for all types of exposed roof slabs(new and old) and terraces(sloped and flat). The special pigments and advanced antifungal additive provide long-lasting tough waterproofing membrane. The low thermal conductivity of the membrane with special Glass Micro fibres serves as a good insulation medium and resists the heat transfer.

Glass fibre meshes can be used to further reinforce the coatings. The long-lasting glossy white colours reflect solar radiation and heat into the atmosphere which keeps the interior of a building cooler.

A coating that combines the benefits of waterproofing, as well as heat reduction in a single product, are available in the market which ensures value for money to customers.

Green roofs

Membrane waterproofing is the best way to pre-treat your roof or terrace before doing any kind of green roofs. The membranes can have fibreglass or polyester as reinforcement. APP Membrane modified bitumen membranes can also be used effectively for waterproofing roofs.

waterproofing pool

Water tanks And Swimming pools

Acrylic polymer modified elastomeric waterproofing membrane coating for water tanks and swimming pools. Epoxy pool paint can be used as an alternative which can last for many years and provide a hard, non-porous tile finish.

It is also easy to clean and withstands chemicals and automatic cleaners. Connect with us to know more.


KJA & Sons - Engineers and Contractors
CC – 15/ 68 A, West Karuvelipady, 
Kochi – 682005

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