Forum Thread: How to Use Water Repellent-Waterproofing Material to Exterior Walls

If most of the part of your home or office structure involves concrete section, then you may want to consider waterproofing the structure for its long & comfortable life. The best practice to secure your architecture is to waterproof the concrete itself that's or apply a reliable waterproofing coating on the exterior wall as they are mostly exposed to the sunlight, rainwater, high temperature or humidity, making them vulnerable to water & moisture traveling through them and affecting the internal side of the walls.

Waterproofing chemicals prevents both the growth of mold and even irreparable damages. Hence an effective & affordable waterproofing is a must for the exterior walls that offers not only decorative finish but also protective layer as well. Let's see how you can waterproof the exterior walls using the water-repellent materials:

Step - 1. : Knowing the Concrete

Although many concrete material claim to be waterproof or weather-resistant, extreme weather conditions, heavy rainfall & high temperatures can cause these fashionable concretes deteriorate affecting the health of the walls both externally as well as internally. Relying solely on the competence of concrete can expose potential risk on the walls and hence it is advisable to have correct waterproofing for your exterior walls.

Step - 2. : Preparing the Wall

It's always a healthy practice to prepare the wall before the makeover. Caulking, concrete patching & grinding the surface can offer smooth & even area for waterproofing membrane to adhere to. Good-quality filler can be used to repair cracks and patch holes present on the walls. Any dirt, oil, loose material clinging to the concrete should be washed away before initiating the waterproofing process. Before going for any good quality waterproofing material in India, you should prepare the wall as per the heterogeneity of the weather in the country.

Step - 3. : Correct Waterproofing Material

Wide range of waterproofing materials is available these days to help the homeowners & builders to protect their home from external moisture. These include concrete waterproofing coating, silicate-based concrete sealer, waterproofing paint, polymer-based liquid membranes, self-adhering sheet-membranes, exterior insulated finish systems (EIFS), silicon based penetrating & water repellent products, etc. Depending on the nature of the work, you can select any best-suited waterproofing material for your exterior walls.

Step-4.: Application & Finishing

The method of application varies as per the waterproofing material. A subtle & well-experienced hand can offer the best waterproofing results. Many waterproofing material manufacturers in India offer guidelines & 'how-to-use' information for their products. If required, consult the builder or waterproofing service provider for any query or doubts on how to safeguard your walls externally.

Waterproofing the exterior walls plays a significant role in long run. It also enhances the over-all performance of the structure saving you huge expanses on the repairing and the maintenance of it. For waterproofing the exterior walls, we highly recommended the Nanosil by 20MCC. Inspired by nature, this silicon based penetrating waterproofing & water repellent product can be easily applied with brush or air-spray. It features waterproofing nanotechnology offering effective protection in heavy rains, UV resistivity and Prevents Painted surface from algae & dirt pickup. Checkout more at

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