The BH Ultimate Guide to Waterproofing

Everything you need to know about waterproofing your home

Proud homeowners everywhere would agree on one thing—the heartbreak is real when you see paint peeling off your walls or cracks setting in. It all boils down to how well (or how poorly) your house was waterproofed. Firstly, there is no ‘one-size-fits-all’ approach to waterproofing. For instance, did you know that there are special products to seal and waterproof the masonry joints around door frames, window frames and switchboards, and different ones for sanitaryware, glass and metal joints? That’s the thing about waterproofing—if it’s not done right with specialised products to address different problem areas, it could be a wasted exercise. For all those questions buzzing in your mind right now, just off the top of your head, we consulted the experts at Asian Paints SmartCare to get the answers:

First things first—is damp-proofing the same as waterproofing?
No. Waterproofing covers more areas and issues like cracks and gaps, tiling, paint peeling and efflorescence (the formation of a layer of salt on the surface of porous materials); it also strengthens the concrete.

Should waterproofing be done along with painting?
No. To get the best results, waterproofing should be done before painting. In case of moderate to severe dampness, or leakage, it should be addressed immediately.

How long does the process take?
It depends on the nature of the treatment. In case of a new construction, it takes three to five days. In case of old structures or repair work, keep more time in hand—it will take at least two weeks.

How long will the effects last? Do I need to do it every year?
If the source of the dampness or leakage is properly cured, you won’t need to do it till the next house-painting cycle (three to five years approximately).

When is the best time to start the waterproofing process?
Ideally, when your house is being constructed. It’s the failproof way to ensure that new or small leakages and dampness don’t become bigger hindrances in the future. For existing structures, exterior waterproofing issues need to be addressed before the monsoon

What kinds of residences are more susceptible to water-seepage issues?
Independent homes, bungalows and top floors of buildings are more susceptible due to weather conditions and expansion or contraction of external surfaces.

Is the treatment the same for apartments and bungalows?
No. Besides requiring much more external waterproofing, bungalows also need heatproofing to reduce the surface temperature. Stand-alone residences are also vulnerable to rise in the groundwater level, which causes dampness in walls.

If you live in an apartment, you need to focus on protecting the top-coat paint from surface dampness arising from areas like bathrooms and kitchens.

Which parts of my house are more likely to be problem areas?
Every corner that is prone to leakage or dampness, such as bathrooms or basements—as well as the parts that are exposed to rain—terraces, water tanks and vertical walls. For areas that are likely to develop cracks and gaps, preventive measures can be taken by accounting for them during the construction phase itself.

What are the different waterproofing requirements that I should be aware of?
Read as much as you can about the various products that are available to treat problems that are unique to different areas of your house. For instance, terraces and exterior walls don’t just need waterproofing and heatproofing, but also need to be treated with products that can bridge cracks. Scroll till the end of the article to know about the products recommended for preventing and treating the different kinds of waterproofing issues.

What if I don’t want to go through all these hassles? Are there any quick fixes?
Unfortunately, there are no quick fixes. If the surface is treated but the source of the leakage is not identified and sealed, the damages will be visible again in a couple of months.

Is there a waterproofing warranty cover? What will it offer?
Yes. A warranty offers the assurance of product performance if applied as per the requisite guidelines. Depending on the product, the timespan of the warranty will range from one to fifteen years.

Are there any other best practices for waterproofing that I need to be aware of?
Preventive waterproofing is always beneficial and cost effective, so don’t wait for the problem to become severe. The application of the products is as important as the product itself, hence choose the right applicator.

How much does it cost?
The costs vary as per nature of the issue or construction and range anywhere from Rs 10/square foot to Rs 40/square foot.

Where can I find competent applicators?
Contact the experts at Asian Paints. They can identify and help solve the problem via expert application of specialised preventive and curative products. You could also avail of services like masonry, plumbing, tile fixing and tile grouting based on what you need.


A comprehensive list of everything you need for waterproofing your home by Asian Paints SmartCare


Damp Proof
Damp Proof is a waterproofing and heatproofing treatment for new constructions which offers protection of up to seven bars hydrostatic pressure and reduces the surface temperature by five degrees. It is ideally suited for terraces, vertical walls, parapets and sun shades.

Damp Sheath Exteriors
An economical waterproofing solution, this can be used as an exterior waterproofing primer in place of an ordinary exterior primer and is meant for terraces and vertical walls.

Textured Crack Filler
This long-term cure for exterior plaster cracks can fill gaps of up to 10 mm in exterior surfaces.

Epoxy TriBlock
This is the ultimate waterproofing coating for water tanks and other cement-based water retaining structures.


Damp Sheath Interior
A specially-designed undercoat for interior vertical walls, this prevents surface dampness and protects the top coat of the paint from damp patches.

Crack Seal
This superior compound is meant to be used for cracks on interior surfaces up to 3mm and is available as a ready-to-apply paste.


Damp Block 2K
Meant for sunken areas such as bathrooms, toilets and balconies, this solution provides lasting protection against efflorescence.

Bathroom Waterproofing Membrane
This is especially recommended for apartment bathrooms due to its long-lasting nature and is meant to be used on walls and floors.


Vitalia Neo
This integral waterproofing compound is mixed with cement at the time of construction to provide a basic level of waterproofing and for strengthening the concrete.

Repair Polymer
This high performance binder is recommended as a strengthening and bonding agent for concrete and mortar during construction.


This acrylic sealant for masonry joints is water and UV resistant and is apt for usage on joints around door frames, window frames and switchboards.

This durable and odourless sealant is used for glass, sanitary, wood and metal joints and can withstand joint movement of 25%.


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