Waterproofing process

A waterproofed basement is a happy basement. It protects your belongings, prevents mold growth, and keeps your living space dry and comfortable. However, the process is fraught with potential pitfalls that can compromise its effectiveness. Whether you’re tackling a residential bathroom waterproofing project or waterproofing a large commercial building, knowing what not to do is just as important as knowing what to do. In this article, we’ll explore seven common mistakes to avoid during the waterproofing process. By understanding these frequent errors, you can ensure a more successful and durable waterproofing application, saving time, money, and frustration down the line.

Here Are the 7 Mistakes to Lookout for During the Waterproofing Process

Skipping on Surface Preparation

Imagine painting a dirty wall – the paint won’t adhere properly. The same goes for waterproofing!  Your concrete surface needs a thorough cleaning. Remove dirt, dust, debris, and any existing waterproofing materials that might be flaking. Fill the gaps and voids using fillers like cement grout, so that the waterproofing membrane bonds to the surface well. Also, ensure the surface is dry before installing the waterproofing membrane. 

Neglecting Corners and Joints

Corners and joints are prime targets for water leaks. Don’t neglect them!  When applying waterproofing materials, pay special attention to these areas. Grout these areas using an expansive grout to treat vulnerabilities. Fill the cracks using polymer-modified mortars to make a rounded corner. Use thicker layers of membrane or sealant in corners, and ensure proper overlapping of coatings at joints.

Rushing the Curing Process

Waterproofing membranes and coatings need sufficient time to dry and cure completely before they can effectively repel water.  Rushing the process can lead to weak or compromised waterproofing.  Always follow the manufacturer’s recommended drying times between coats and before applying additional layers.

Choosing the Wrong Waterproofing Membrane

Not all waterproofing membranes are created equal!  Choose the right waterproofing solution for your specific needs. Consider factors like water pressure, positive or negative water exposure, and compatibility with your basement walls. Research different membranes like liquid-applied or sheet membranes, and consult a professional if needed to ensure you select the most suitable option.

Improper Installation

Improper application of the waterproofing membrane can render it ineffective.  For example, for liquid membranes, one should ensure there is even coat application using the recommended tools (rollers, brushes) as per the manufacturer’s instructions.  For sheet membranes, follow the installation guide meticulously, ensuring proper overlaps and seams are sealed effectively.

Irregular Maintenance

Waterproofing requires ongoing vigilance and maintenance. It is important to periodically inspect the walls, floors, roofs, etc, for any signs of cracks, tears, or water damage. To ensure continuous protection against water intrusion, reapply waterproofing materials to areas that exhibit wear and tear. Maintaining a robust barrier is essential for the long-term efficacy of your waterproofing solution.

Drainage Oversight

When you are waterproofing areas like basement walls, neglecting proper drainage can undermine your efforts. A functional drainage system is essential for steering water away from your foundation. Ensure that your gutters are regularly cleaned, the ground around your house is correctly graded to facilitate water flow away from the foundation, and in areas with high water tables, consider implementing a sump pump system. Ignoring these steps can lead to significant water damage and compromise the structural integrity of your home.


By implementing a regular maintenance plan that includes inspections, addressing deterioration promptly, and maintaining drainage systems, you can significantly extend the lifespan and effectiveness of your waterproofing project. Remember, a proactive approach translates to a drier, healthier building environment for the long term.


To avoid problems during the waterproofing process, homeowners should seek professional assistance. Sunanda Global is the best waterproofing company, that offers comprehensive solutions tailored to your specific needs. With our expertise in advanced waterproofing technologies and a commitment to quality, Sunanda Global has provided waterproofing solutions to numerous projects like Wankhede Stadium in Mumbai, Phoenix Marketcity in Bangalore, and many more. 


We ensure that every project meets the highest standards of durability and effectiveness. Engaging with our professional services not only helps prevent common waterproofing errors but also guarantees a healthier, drier basement for years to come.


Contact Sunanda Global today for your waterproofing needs!