What is waterproof wall paint, and does it really work?

Everything you need to know about waterproof wall paint and how to use it to achieve lasting durability for your home’s walls.

Waterproof wall paint is precisely what its name suggests – a type of paint that resists water and humidity. It comprises resins, pigments, and additives that form a durable coating on the wall surface and make the surface water-resistant when exposed to moisture. The difference between conventional paint and waterproof wall paint is that conventional paint lets water and moisture seep into the walls resulting in damage to the construction, whereas waterproof paint resists it. 

Which is why, waterproof wall paint is ideal for areas of high humidity such as the bathroom and kitchen as it creates a strong barrier that protects the interior surfaces that are exposed to humid conditions, moisture, or direct water exposure. 

But what are the different types of waterproof wall paint? Which waterproof wall paint is best for which area in your home? We answer all the questions you have (and some you didn’t) about waterproof wall paint.

What are the advantages of using waterproof wall paint?

Ensures High Durability

Waterproof wall paint is highly durable and long-lasting and forms an impermeable barrier that prevents moisture from reaching the walls. Its surface can be cleaned and scrubbed easily with a solution of soap and water and it does not chip the paint surface. 

Cost-Effective 

Waterproof wall paint is a cost-effective solution in the long run as it prevents the walls from damage caused due to moisture, water, or humidity. This is a great way to reduce the overall cost of maintenance and repairs that the building may face overa period of time.  

Prevents salt deposits on the wall

Water penetration causes salt deposits to build on the surface through a process called efflorescence, appearing as white powdery spots resulting from a chemical reaction. Waterproof wall paint prevents the surface from damage caused by efflorescence.

Inhibits Growth of Mould or Mildew

Waterproof wall paint prevents the growth of mould and mildew that tends to grow and thrive in humid conditions on porous surfaces. Exposure to a mouldy environment may result in allergies and can cause some adverse health effects. Additionally, some waterproof wall paints comprise antimicrobial elements that play an important role in preventing the formation of mould and mildew.  

Resists Cracking 

A high level of humidity may cause a temperature difference in the walls; waterproof paint endures this, while conventional paint may result in cracking and peeling.

Reduces Musty Odours

Waterproof wall paint helps reduce musty odours in the basement that are usually caused due to the growth of mould and mildew.

What are the disadvantages of using waterproof wall paint?

Not a Waterproofing Solution

Waterproof wall paint is not a waterproofing solution but functions as a simple barrier that prevents water seepage. Note that some amount of water or moisture may still penetrate the interiors.  

Paint may Flake or Peel

If there is significant water on the external surface then the waterproof paint may flake and eventually peel off.

What are the different types of waterproof wall paint?

Acrylic Waterproof Wall Paint

The biggest advantage of acrylic waterproofing paint is its ease of application, fast drying time, and ability to create a protective barrier against moisture. It prevents the growth of mould and mildew.

Acrylic waterproofing paint is highly recommended for interior walls and ceilings

Epoxy Waterproof Wall Paint

Epoxy waterproof paint forms a robust and impermeable coating that blocks the transmission of water and moisture. It is highly resistant to chemicals and withstands high foot traffic.

Epoxy paint is suitable for waterproofing basements and concrete surfaces.

Latex Waterproof Wall Paint 

Latex paint is easy to apply, quick to dry and offers effective protection against water and moisture. Latex-based waterproof paint is preferred for interior use on the walls and ceilings. It is frequently used in basements and bathrooms, which are susceptible to damp conditions.

Bituminous Waterproof Wall Paint

Bituminous paint is made from bitumen, a viscous, sticky, dark substance that safeguards the surface from water and makes the surface UV-resistant.

This material is primarily used for waterproofing roofs and foundations by creating a dense waterproof layer.

Silicate Waterproof Wall Paint

Silicate paint penetrates the wall surface deeply, strengthens it, and prevents water from getting in. This type of paint is also fade-resistant and can effectively protect your home from dampness.

Silicate paint is a good (not to mention, eco-friendly) choice for waterproofing masonry surfaces.

Cement Waterproof Wall Paint

Waterproof cement is a water-repellent powder that may be slightly more expensive than regular cement but it helps in protecting the walls.

Cement paint helps prevent wall leakage, especially during the monsoon season or unforeseen pipe leakages.

Waterproof wall paint can create a water-repelling surface that is achieved via a variety of mechanisms. The waterproof wall paint integrates hydrophobic components that naturally resist water by creating a smooth surface that enables the water droplets to bead up and roll away. Once the waterproof wall paint dries, it forms a continuous film that acts as a physical barrier against water penetration enhances the overall durability of the wall surfaces, and increases the life of the building.