waterproof wall paint

As your structure ages and is exposed to the weather, the risk of encountering water-related issues rises. 

When it comes to protecting your walls from water seepage, choosing the right waterproof paint for your wall is essential. 

But how do you choose the right waterproof wall paint for external wall waterproofing? In this guide, we will explore key factors to consider when making this important decision.

Factors to Consider When Choosing Waterproofing Wall Paint

1. Surface Type

The first step in choosing effective waterproof paint is to consider the type of surface you intend to paint and waterproof. Different surfaces may require specific types of waterproof paint. The following are some types of walls.

  • Exterior Walls: For outdoor walls, opt for waterproof paint designed for exterior use. These paints provide protection against rain, UV rays, and other environmental factors.
  • Bathroom Walls: Bathrooms are high-moisture areas, so it’s crucial to choose waterproof paint designed explicitly for bathroom walls. These paints are formulated to withstand constant exposure to moisture and steam.
  • Kitchen Walls: Kitchens are another area prone to moisture, especially around sinks and cooking areas. Select waterproof paint that can handle splashes, stains, and regular cleaning. 

    2. Paint Type

Waterproof paints are available in two primary types: water-based and oil-based. Each type has its advantages and disadvantages:

  • Water-Based Paint: Water-based waterproof paint is easy to clean and typically dries faster than oil-based alternatives. It emits fewer odors, making it suitable for indoor projects. However, it may not provide as durable a finish as oil-based paint.
  • Solvent-Based Paint: Oil-based waterproof paint offers superior durability and moisture resistance. It forms a robust barrier against water and moisture, making it an excellent choice for high-humidity areas. However, it emits strong odors during application and requires longer drying times. 

    3. Mold and Mildew Resistance

Moisture-prone areas are often breeding grounds for mold and mildew, which can be unsightly and harmful to your health. To prevent these issues, look for waterproof wall paint that offers mold and mildew resistance. These paints contain additives that inhibit the growth of these unwanted substances.

4. Ease of Application

Consider your level of expertise and the complexity of the painting project. Some waterproof paints are more user-friendly and suitable for DIY enthusiasts, while others may require professional application. Read product labels and choose a paint that matches your skill level to ensure a smooth and successful painting process.

5. Color and Finish Options

Waterproofing wall paint comes in various colors and finishes. While aesthetics are important, keep in mind that the finish can affect the paint’s performance. For moisture-prone areas, semi-gloss or satin finishes are often recommended. These finishes provide better moisture resistance and make it easier to clean and maintain the walls.

6. Budget Considerations

While cost is a factor, it’s essential to strike a balance between your budget and the quality of the paint. Investing in slightly more expensive, high-quality waterproof coating for walls can save you money in the long run by reducing the need for frequent repainting and repairs.

Acrylic Elastomeric Waterproof Paint 

Acrylic Elastomeric waterproof paint forms a flexible and breathable barrier that can resist moisture while allowing the surface to breathe. It is highly flexible and can stretch to accommodate surface movement. It is an outside wall paint ideal for roofs and concrete surfaces. They provide excellent waterproofing and can bridge small cracks

Our solution: SUNACE: 100% acrylic waterproofing exterior coating

What is the Process of Applying Waterproof Wall Paint? 

Step 1: Clean cracks in the wall with a water jet or water spray.

Step 2: Fill cracks with POLYFILL AR paste. It is a ready-to-use crack filler putty so there is no need to open the cracks. Simply apply over the cracks and the putty gets absorbed within the cracks in a few hours. In case of deeper cracks, two applications may be needed. 

Step 3: Mix 1 kg POLYWALK WP waterproofing liquid with 1.25 kgs of grey or white cement and apply a primer coat over the entire external wall. Allow it to cure for 24 hours.

Step 4: Apply two coats of 100% Acrylic Elastomeric Waterproof Paint SUNACE on the primed area at an interval of 24 hours between coats. Allow the final coat to cure for 24 hours.


Choosing effective waterproof wall paint is paramount to protecting your walls from moisture-related damage and ensuring their longevity. Remember that each painting project is unique, so take the time to assess your specific needs and select the waterproof paint that best suits your requirement