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ROOFCRETE EP is a three-part, solvent-free structural epoxy concrete and mortar system — epoxy resin, amine hardener and silica filler, mixed with site-graded aggregates to form a high-strength epoxy repair concrete. Designed for reinstatement of distressed and defective concrete in deep section repairs: foundations, dams, spillways, bridges, runways and highways. Achieves 93 N/mm² compressive strength at 7 days, bonds to cement at 4 N/mm², and cures unaffected by humidity — suitable for both damp and dry surfaces.
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.
ROOFCRETE EP is an epoxy repair mortar and concrete system in three parts: epoxy resin, amine hardener and silica filler. Mixed with site-graded aggregates, it forms a structural epoxy concrete for reinstating distressed and defective concrete. It is trowelled onto a surface primed with Roofbond EP Primer while the primer is still tacky.
Reinstates deep sections in columns, walls and heavily loaded areas.
Reinstates distressed foundation concrete, reaching 93 N/mm² at 7 days.
Cures unaffected by humidity, which helps on damp concrete.
Bonds to cement at 4 N/mm² over the primed surface.
Levelled and finished with a steel trowel without over-working.
Used where high compressive strength and impact resistance are required.
Suitable where full dryness before repair is impractical.
Chosen where chemical and abrasion resistance are required.
For spalled concrete repair in deep sections, it reaches 93 N/mm² compressive strength and 21 N/mm² flexural strength at 7 days, and bonds to cement at 4 N/mm². Curing is unaffected by humidity, so it works as an epoxy mortar for damp surfaces as well as dry ones. Pot life is 90–120 minutes at 27°C, and packs are 7.5 Kgs and 22.5 Kgs without coarse aggregates. Apply within the primer's tacky window of 40–50 minutes at 35°C, and clean tools with acetone, not water.
Armstrong Chemicals supplies ROOFCRETE EP to sites across Telangana, Andhra Pradesh, Karnataka, Kerala and Tamil Nadu, including Hyderabad, Vijayawada, Bengaluru, Kochi and Chennai.
A solvent-free, three-component structural epoxy concrete and mortar system that bonds at 4 N/mm² to cement, cures unaffected by humidity, and achieves the highest compressive strength in the Armstrong repair range — for deep section repairs in dams, bridges, foundations and runways.
Get a QuoteOrdinary cement mortar patch repairs have poor bond strength to existing concrete, shrink on curing and lack the chemical and abrasion resistance needed for heavily loaded structural elements. Under dynamic load, they debond and fail.
A structural-grade epoxy repair system that doesn't shrink, bonds at 4 N/mm² to cement, achieves 93 N/mm² compressive strength at 7 days and cures in both damp and dry conditions — engineered for columns, foundations and infrastructure where repair quality is non-negotiable.
Unaffected by humidity during curing — ROOFCRETE EP is suitable for both damp and dry surfaces, making it practical for concrete repairs in environments where full dryness before repair is impossible.
A solvent-free formulation that provides high resistance to chemical attack and abrasion — suitable for structural elements exposed to aggressive environments, heavy traffic and impact loading.
The full site sequence — with the primer tacky window and acetone-only tool cleaning called out where it matters.
Not a patch — a structural-grade epoxy repair system for distressed concrete.
Achieves 93 N/mm² at 7 days and 21 N/mm² flexural strength — structural-grade performance far exceeding ordinary cement mortar repairs, in a 90–120 minute pot-life system.
Cures unaffected by humidity — unlike conventional epoxy systems, ROOFCRETE EP is suitable for both damp and dry surface repairs where moisture cannot be eliminated before repair.
Solvent-free, high-strength epoxy concrete with excellent resistance to chemical attack and abrasion — suitable for spillways, industrial floors and heavily trafficked structural repairs.
Formulated for deep section repairs in columns, walls and foundations — non-shrink, compatible with concrete-to-concrete, steel-to-concrete and thin section bonding.
Available in 7.5 Kg and 22.5 Kg packs (without coarse aggregates — aggregate added at site). Shelf life of 1 year stored dry below 35°C in unopened containers.
⚠️ Flash point @ 35°C — flammable. Ensure good ventilation at the application area. Do not smoke during use. Wear protective clothing, barrier creams, gloves and goggles — especially for those sensitive to epoxy resins and solvents. Eye contact: wash with plenty of water and seek immediate medical advice.
Clean all tools and equipment with acetone or other solvents immediately after use — not water. Hardened epoxy cannot be removed once cured.
Mechanically clean the substrate — remove all oil, grease, corrosion deposits, algae, loose particles and debonded materials by chipping or scabbling until a sound substrate is exposed
Remove all laitance by scabbling or grit blasting
Remove oil, grease and fungus by detergent scrubbing; use acid etching if required
Add the entire contents of the Roofbond EP Primer hardener tin to the base tin and mix thoroughly
Apply the primer immediately in a thin, continuous film using stiff brushes; for heavy/porous areas apply a second coat immediately
⚠️ ROOFCRETE EP must be applied while the primer is still tacky — within 40–50 minutes at 35°C
Pour the entire contents of Part B (hardener) into the Part A (base) container and mix with a slow-speed electric drill for 3 minutes until homogeneous
Slowly add Part C silica filler and site aggregates under continuous mixing until a uniform concrete mix is obtained (reduce Part C proportionally if site aggregates are added)
Apply to the primed surface while the primer is still tacky; level and finish with a steel trowel — do not over-work
⚠️ Clean all tools and equipment with acetone or other solvents immediately after use — do not use water
Coverage estimation is not applicable for this product. Please contact our team for application guidance.
Full specifications, application systems, layering guides, and coverage tables.
Request a quote and your nearest Armstrong distributor will contact you directly.
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