About Terrace Waterproofing
Your terrace is constantly exposed to rain, sunlight, heat, humidity, and temperature changes. Over time, these conditions can cause cracks, water seepage, damp patches, and structural deterioration. At Prerna Service, we provide professional terrace waterproofing solutions designed to prevent water penetration, extend the life of your building, and reduce long-term maintenance costs. Whether you own an independent house, apartment, villa, commercial building, factory, or office complex, our experienced team carefully inspects the roof and recommends the most suitable waterproofing system based on its condition and construction type.
Suitable For:
What We Offer / Key Features
Why Choose Prerna Service?
What Causes Terrace Leakage in Bangalore?
Bangalore's climate presents specific challenges for flat concrete roofs. The city experiences significant day-night temperature swings, intense UV radiation during summer, and concentrated heavy monsoon downpours.
Temperatures swing significantly between seasons. Concrete expands and contracts, and inadequately sealed expansion joints crack over time.
Blocked or inadequately sloped drainage outlets allow water to accumulate on the surface, increasing hydrostatic pressure through hairline cracks.
Older waterproofing membranes and terrace tile adhesives degrade under Bangalore's high UV exposure, particularly during summer months.
The junction between the terrace slab and parapet wall is one of the most common leakage entry points and is frequently missed in standard waterproofing treatments.
Buildings constructed in phases often develop leakage at construction joints as the structure settles.
Waterproofing Systems We Use
Selected based on roof substrate, usage load, and existing structural condition.
Liquid Polyurethane (PU) Coating
A two-component elastomeric coating applied as a liquid membrane. Suitable for most flat RCC terraces. Accommodates minor crack movement without splitting. Applied with fiberglass mesh reinforcement in areas of active cracks. UV-resistant topcoat provides additional protection.
Cementitious Waterproofing
A cement-based crystalline or acrylic-modified coating used where the surface requires a more rigid treatment or where the terrace will be used as a walkable area without a protective screed.
Bitumen Modified Polyurethane (BMPU) System
A hybrid system combining bitumen and polyurethane properties. Used for large industrial terrace areas or where cost considerations make a full PU system less practical.
Materials We Use
We work only with proven, certified waterproofing systems from recognized industry manufacturers.
Dr. Fixit (Pidilite Industries)
Waterguard, Raincoat, and LW+ systems
Fosroc
Nitoproof and Brushbond ranges
Sika
Sikagard and SikaTop systems
Berger
WeatherCoat systems for external surfaces
How Long Does Terrace Waterproofing Last?
Professionally applied liquid PU coating on a properly prepared surface in Bangalore conditions typically provides 8–12 years of effective protection, subject to surface preparation quality (the single most important factor), dry film thickness (DFT), UV topcoat application, and annual maintenance inspection (looking for new cracks or drainage blockages).
Our Execution Process
Thorough preparation, premium materials & experienced applicators.
Detailed Roof Inspection
Digital thermal moisture audit to detect hidden slab dampness and identify all micro-cracks.
Crack Identification & V-Groove Sealing
Mechanical cleaning and filling roof cracks with elastomeric polyurethane sealant.
Surface Preparation & Jet Cleaning
High-pressure jet wash to remove dirt, moss, loose cement, and old tar felt.
Primer & Waterproof Membrane Application
Applying deep penetrating acrylic primer followed by dual coats of liquid PU coating embedded with fiberglass mesh.
Protective Finishing Coat & Ponding Test
Applying UV-resistant topcoat, performing 48-hour water ponding test, and issuing 10-year warranty document.
Visual Proof: Terrace Waterproofing
See how our treatment transforms damaged surfaces.
✨ After: 100% Waterproof Terrace • UV Resistant PU Coating
⚠️ Before: Damaged Terrace • Water Leakage • Cracks