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ROOFCOAT FLEXI 100
- Terrace leakage
- Bathroom and wet areas
- Balcony and podium waterproofing
- Leaking planter boxes
High Performance Elastomeric Acrylic Polymer modified cementitious Waterproof System. Tough flexible hard wearing surface, resistant to UV rays. Jointless and seamless membrane.
Specifications
Figures are controlled laboratory results. Actual site performance varies with substrate, temperature, humidity, application method and workmanship — please confirm the current product datasheet before specification.
Where to use ROOFCOAT FLEXI 100: cementitious waterproofing for terraces and wet areas
ROOFCOAT FLEXI 100 is a cementitious waterproofing coating modified with elastomeric acrylic polymer. You blend the liquid on site with cement and water and apply it as a two coat waterproofing slurry by brush or roller. It cures to a tough, flexible, hard wearing and jointless membrane that resists UV rays.
Flat roofs & terraces
Excellent UV resistance for exposed roof and terrace surfaces.
Balconies & podiums
Tough, hard wearing flexible surface in two brush or roller coats.
Bathrooms & wet areas
Jointless membrane with bonding strength above 1.0 MPa.
Water tanks (external)
Brushed on to tank surfaces in two coats, 24 hours apart.
Planter boxes
Resistant to moisture, salts and fungal growth.
For terrace leakage, blend 1 litre with 2 kg cement and 200 ml water. Coverage is 20–30 sq.ft per litre for 2 coats. This crack bridging coating has 120%+ elongation, tensile strength above 1.5 N/mm², bonding strength above 1.0 MPa and bridges static cracks up to 1 mm. It is listed against ASTM C836 among other ASTM standards. Apply the second coat perpendicular to the first after 24 hours, then allow 7 days curing.
Armstrong Chemicals supplies ROOFCOAT FLEXI 100 to sites across Telangana, Andhra Pradesh, Karnataka, Kerala and Tamil Nadu, including Hyderabad, Vijayawada, Bengaluru, Kochi and Chennai.
The Ultimate Shield for Indian Roofs
Waterproofing that stretches, cools, and matches your style — engineered for extreme Indian heat and heavy monsoons.
Get a QuoteWhy Traditional Cement Fails
Indian temperatures swing from 20°C to 65°C on roof surfaces. Rigid cement coatings can't handle this thermal shock — they crack, delaminate, and let monsoon water seep through, causing structural damage every season.
The Roofcoat Advantage
Roofcoat Flexi 100 is elastomeric — it stretches (120%+ elongation), bridging cracks and gaps as your roof expands and contracts. One application, years of protection.
The Chameleon Effect
Mix Roofcoat Flexi with White Cement and any stainer to create your dream roof color — matching your building's aesthetic while staying fully waterproof.
Heat Reflection Technology
Reflects solar heat to lower indoor temperatures by up to 5–8°C, reducing AC dependency during peak Indian summers.
Up to 30% Energy Savings
During peak summer months
Choose Your Protection Level
Maintenance Shield
Ideal for roofs in good condition needing preventive protection.
Built for Durability
Engineered to protect your structure against India's toughest conditions.
Resilience Against Monsoons
Provides a seamless, impermeable barrier against heavy monsoon rains and persistent moisture.
Combatting Thermal Stress
Reduces heat absorption and prevents thermal shock cracks, lowering internal building temperatures.
Durability in Harsh Conditions
Resistant to harmful UV radiation, coastal salt environments, and extreme weathering.
Practical & Economic
Easy application, long-lasting performance, and reduced maintenance costs deliver high value.
How to Use
Clean and prepare surface, remove loose material
Blend 1 litre of ROOFCOAT FLEXI 100 with 2 kg cement and 200 ml water
Apply first coat with brush/roller
Apply second coat perpendicular after 24 hrs
Allow 7 days curing
Applicable Areas
Coverage Calculator
Enter your surface area to estimate how much ROOFCOAT FLEXI 100 you need. Coverage rate: 20 sq.ft per litre per coat.
Product Brochure
Download Technical Datasheet
Full specifications, application systems, layering guides, and coverage tables.
Frequently Asked Questions
Want to know more? Read the complete technical guide — The Fortress Above and Below: engineering protocols, application systems & the Golden Ratio.
Ready to protect your structure?
Request a quote and your nearest Armstrong distributor will contact you directly.
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