External Wall
Treatment.
Rain doesn't just hit your terrace — it hits your walls. Every monsoon, water penetrates through hairline cracks, porous plaster, and failed paint. The result: damp patches inside, peeling paint, efflorescence, and mold. We apply breathable, silicone-based water repellents that block moisture while letting walls breathe.
How to tell your walls
need treatment.
Damp patches inside
Moisture shows up as dark patches on interior walls, especially during or after rain. Often misdiagnosed as a plumbing issue.
Paint peeling or bubbling
Exterior paint lifts because moisture trapped behind it pushes outward. Repainting without treating the cause is wasted money.
White powder (efflorescence)
Salt deposits on walls mean water is traveling through the masonry and evaporating on the surface, leaving minerals behind.
Green/black mold patches
Persistent dampness creates ideal conditions for mold growth on both exterior and interior wall surfaces.
5 steps. Zero shortcuts.
Here's exactly what we do.
Everything in one
transparent package.
Questions about
external wall treatment.
No. The silicone-based repellent is completely invisible and doesn't alter the appearance of paint or texture. It's breathable, so it won't cause blistering.
Yes, in most cases. If the existing paint is severely peeling or damaged, we may recommend removal before treatment. The inspection will determine the approach.
Paint is a surface coating that cracks and peels when moisture pushes through from behind. Our treatment penetrates the wall and creates a molecular-level barrier. You can repaint on top of it.
We treat whichever walls are affected. Typically the rain-facing walls (usually west and south) need it most. Our inspection identifies exactly which areas need treatment.
Window edges and balcony junctions are actually the most leak-prone areas on external walls. We seal these junctions specifically before applying the overall wall treatment.
Stop the leak
before monsoon.
Book a free home inspection. We'll find every weak spot, share a detailed report within 24 hours, and give you a transparent quote — zero obligations.
"Had some heat issues from my terrace. House of Waterproofing team applied Cool Coat and the difference is already there. Work was done neatly."