Waterproofing & Leakage
External wall waterproofing against driving monsoon rain
Crack filling, water-repellent treatment and elastomeric coatings that stop rain soaking through your walls into rooms.
When monsoon rain hits a wall sideways for hours, water soaks through hairline cracks and porous plaster. Inside, you see damp patches, peeling paint and fungus on the same walls every year.
Ordinary exterior paint is not enough. RennovEN repairs cracks first, then applies a water-repellent and elastomeric system that stretches with the wall instead of cracking.
Signs you need this
- Damp patches on inner walls after rain
- Exterior paint flaking or chalky
- Visible hairline cracks on the façade
- Fungus on the outside of the house
The RennovEN promise
- 10-year warranty on all works
- Itemised pricing, approved before work begins
- One accountable team across every trade
- Residential specialists — homes only
Diagnosis
Why it happens
Hairline cracks
Plaster cracks open with heat and let rain in during storms.
Porous plaster
Weak or old plaster absorbs water like a sponge.
Window and sunshade joints
Water runs along sunshades and enters at their junction with the wall.
Our method
How RennovEN does it
- 1
Survey
Map cracks, weak plaster and leak paths.
- 2
Repair
Fill cracks and patch failed plaster.
- 3
Prime
Water-repellent primer suited to your wall.
- 4
Coat
Elastomeric waterproof exterior coating.
What’s included
- Façade crack survey
- Crack filling and plaster repair
- Sunshade and window junction sealing
- Water-repellent primer
- Elastomeric exterior coating
What affects the cost
- Wall area and height
- Scaffolding requirement
- Extent of crack and plaster repair
- Coating system chosen
Every home is different, so we don’t publish rate cards. After a free inspection you get an itemised estimate, and you approve every line before work begins.
Get my itemised estimate10-year warranty
External walls we waterproof are covered for 10 years against rain seepage through treated areas due to our workmanship. Natural colour fading is normal wear.
How our warranty worksFAQ
External Wall Waterproofing: your questions
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