Waterproofing the Walls and Floors in your Apartment.

When renovating your home one of the most confusing aspects to plan for is the waterproofing. It’s something that doesn’t seem to add much to the aesthetics of the room, but can actually have the biggest impact on a space by protecting it from seepage and preventing structural and health damages caused by dampness and mold. The worst thing about damage caused by seepage is that you won’t realize anything is wrong till it’s too late.


There are several reasons that cause damp walls, some of the more relevant ones are listed below:

  • Cracks on the exterior wall that allow rainwater to seep in.
  • Gaps in the floor tiles allow water from bathrooms to seep through and damage adjoining walls.
  • Water collects in the balcony due to improper drainage and seeps into interior walls.
  • Cracks in plumbing pipes.
  • Insufficient air circulation in bathrooms cause buildup of moisture.


Remember as a thumb rule that water needs to be guided out, which means wet surfaces need to be properly sloped and sealed.

Waterproofing requires a lot of demolition of walls and floors, so combine it with a larger home renovation project. Use a reputed company, like Dr. Fixit, Fosroc or Asian paints, for waterproofing and get a warranty even if it’s a bit more expensive. Ideally your waterproofing should last up to 10 years without damage if applied correctly.

Types of waterproofing commonly used in India

Floor Waterproofing

For floor waterproofing one suggests using URP chemical above the cement concrete along with a waterproof membrane under your floor tiles and turn the membrane up around 4″ up onto the skirting on the walls. Make sure you re-grout your tiles every 18 months or so, this will avoid any moisture going through to the substructure.


Wall Waterproofing

In order to waterproof your walls, remove the existing plastering, add a layer of tapecrete chemical (approx. 2-3 mm thick) followed by the wall plastering and paint.

Hope you found these tips useful, do share your renovation experiences with us in the comments below.


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