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CONPROOF 500
- Dampness in new plaster
- Waterproof plaster mix
- Waterproofing slab concrete
- Damp-proof screeds
CONPROOF 500 is a high-plasticizing, micronised integral liquid waterproofing compound for plastering and concrete — the most efficient and dependable waterproofing compound in the Armstrong range. Compliant with IS 2645-2003, with nil chloride content, compatible with all types of ordinary Portland cement, super sulphate and slab cement. A multi-action compound: it reduces permeability, controls water-cement ratio, prevents bleeding and segregation, and forms millions of micronised hydrophobic particles that block and coat capillary channels and voids from within.
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 CONPROOF 500: integral waterproofing compound for plaster and concrete
CONPROOF 500 is an integral waterproofing compound for plaster and concrete, a high-plasticizing micronised liquid with nil chloride content. It reduces permeability, controls the water-cement ratio and prevents bleeding and segregation. This micronised waterproofing compound forms hydrophobic particles that block and coat capillary channels and voids from within, and you dilute it in water before adding it to the mix.
Plastering & Cement Mortar
Mixed into mortar at 500 ml per bag for damp-proof plaster.
Concrete Mixes
Reduces permeability and prevents bleeding and segregation in the mix.
Reinforced Concrete Structures
Nil chloride content, so it is safe to use around steel reinforcement.
Slab & Foundation Concrete
Blocks capillary channels and voids inside the concrete.
Waterproofing of Plaster & Screeds
Hydrophobic particles coat the capillaries in plaster and screed.
All Portland / Super Sulphate / Slab Cement Types
Compatible with all ordinary Portland, super sulphate and slab cement.
To stop dampness in new plaster, measure 500 ml per 50 kg bag of cement, mix it with 3–5 litres of water and add it to the mix. Each 500 ml carries 5,000–6,000 million micronised hydrophobic particles of 20-micron mean diameter. This IS 2645 compliant compound meets IS 2645-2003, is non-toxic and non-flammable, and has a 24 month shelf life. Packs run from 500 ml to 210 Litre containers. Cure properly for at least the first 7 days.
Armstrong Chemicals supplies CONPROOF 500 to sites across Telangana, Andhra Pradesh, Karnataka, Kerala and Tamil Nadu, including Hyderabad, Vijayawada, Bengaluru, Kochi and Chennai.
Waterproofing That Works from the Inside Out
A micronised integral compound that forms 5,000–6,000 million hydrophobic particles per 500ml inside the cement matrix itself — blocking capillary channels at their source. Just 500ml per 50kg cement bag. Nil chloride. IS 2645-2003 compliant.
Get a QuoteWhy Surface Coatings Alone Fall Short
Hydrostatic pressure and capillary action force water through concrete and cement at the microscopic level — surface coatings can't address channels that run through the structure itself.
The CONPROOF 500 Advantage
A micronised compound mixed directly into the cement — so the waterproofing goes where the water does, filling and coating capillary channels and voids from within, not just sealing the outside surface.
5,000–6,000 Million Hydrophobic Particles per Dose
500ml of CONPROOF 500 produces approximately 5,000–6,000 million micronised water-repellent particles of 20-micron mean diameter — physically filling and hydrophobically coating the capillary channels and voids in the cement matrix.
Multi-Action Performance
Beyond waterproofing, CONPROOF 500 improves workability, reduces water required for a given slump, prevents bleeding/segregation/shrinkage cracks and efflorescence, strengthens steel bonding, and improves concrete appearance — one admixture, multiple site benefits.
How CONPROOF 500 Waterproofs Concrete
One Dosage, One Method — Mix In and Cure
Use only enough water for a workable cement/concrete mix — do not over-water
Measure 500ml of CONPROOF 500 per bag of 50kg cement
Mix the 500ml with 3–5 litres of water
Add this mixture to the cement/concrete mix, along with any additional water required
Mix as usual
Use well-graded aggregates with adequate fine particle content
Cure properly for at least the first 7 days — major waterproofing improvements develop during this curing period
Waterproofing Built Into the Mix
Not a coating on top — a compound built into the structure itself.
IS 2645-2003 Compliant, Nil Chloride
Independently tested and compliant with IS 2645-2003, with zero chloride content — safe for all reinforced concrete structures.
Micronised Hydrophobic Action
5,000–6,000 million water-repellent particles per 500ml dose fill and coat capillary channels from within — waterproofing at the particle level.
Multi-Action Site Performance
Improves workability and cohesiveness, reduces water demand, prevents bleeding/segregation/shrinkage cracks/efflorescence, and improves steel bonding — beyond just waterproofing.
Simple Fixed Dosage
One dosage — 500ml per 50kg cement bag — for all waterproofing requirements, compatible with all types of ordinary Portland, super sulphate and slab cement.
Applicable Areas
Packing & Shelf Life
Available in 500ml, 1L, 5L, 10L, 20L & 210 Litre containers. Shelf life of 24 months (2 years) from manufacture.
Important Precautions
Use only enough water for a workable mix — excess water causes bleeding, segregation and water channel formation. Use well-graded aggregates with adequate fine particles. Proper curing for the first 7 days is critical — major improvements in watertightness occur during this period. Skin contact: wash with water. Eye contact: wash with plenty of water; if irritation persists, obtain medical help.
Mix Proportion
500ml of CONPROOF 500 per bag of 50kg cement — a fixed, simple dosage for all waterproofing requirements. Mix 500ml with 3–5 litres of water and add to the cement/concrete mix as usual.
Product Brochure
Download Technical Datasheet
Full specifications, application systems, layering guides, and coverage tables.
Frequently Asked Questions
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