Damaged concrete repair with epoxy

Most concrete floors don't fail all at once. A joint chips, a crack opens, a pothole forms along a trolley route, or a machine base plate works loose. Left alone, each of these grows and spreads. Epoxy-based repair materials bond far more strongly to old concrete than cement mortar, gain strength in hours instead of weeks, and handle oil and vibration better. Used correctly, they restore damaged floors without breaking out and recasting the slab.

Match the repair to the damage

Epoxy is strong and rigid. It's ideal for bonding stable concrete, and the wrong choice for moving or wet cracks. Getting this right is the main difference between a repair that lasts and one that fails.

Find the cause first

Repairs only last if the reason for the damage is understood:

• overloading, with point loads from racks, jacks or stacked materials beyond what the slab was designed for
• vibration from presses and heavy machines
• water getting under the slab through cracks and joints
• chemicals attacking the cement paste
• unfilled joints on routes with hard wheels
• poor original concrete or curing

Sometimes the right advice includes a change in how the floor is used, such as steel plates under jack points, drip trays under leaking machines, or softer trolley wheels.

Doing repairs properly

1. Cut, don't feather. Patches are saw-cut to square edges with vertical sides. Thin, tapered patches break off.
2. Remove all weak material. Chemically contaminated or oil-soaked concrete is broken out to sound concrete.
3. Clean and dry. Epoxy needs a clean, dry, sound surface to bond. Damp-tolerant primers are used where drying isn't possible.
4. Prime. The repair area is primed for adhesion.
5. Fill and finish. Epoxy mortar is placed, compacted and finished flush.
6. Cure. Loads return after the specified cure time, often within a day at normal temperatures.

When epoxy isn't the right repair material

• Large areas: epoxy expands differently from concrete, so polymer-modified cementitious repair mortars often suit large repairs better
• Hot zones near furnaces: epoxy softens with heat, so refractory or heat-resistant cementitious repairs are needed
• Structural damage in beams, columns and suspended slabs: these need a structural engineer's assessment first

After repair: protect the floor

Repairs fix today's damage. If the same water, chemicals or traffic continue, a protective floor may be needed: PU concrete in wet areas, chemical resistant flooring in chemical areas, or epoxy flooring and concrete densifier for general protection.

Concrete repair by city

Delhi, Ghaziabad, Noida, Sonipat, Chandigarh, Amritsar, Ludhiana, Ambala, Agra, Kanpur, Lucknow, Bareilly, Baddi, Dehradun, Sitarganj

FAQs

Why do our cement patches keep breaking out?

Thin cement patches bond poorly to old concrete and break under wheels and vibration. Epoxy mortar bonds much more strongly.

Can a leaking basement crack be fixed from inside?

Often yes, with polyurethane injection, which seals cracks even while water is present.

How soon can forklifts use a repaired joint?

Usually within about a day at normal temperatures. Cold weather slows curing.

Do repairs show after they're done?

Yes, repairs usually look different from old concrete. A coating over the area gives a uniform finish.

Call +91-8755475716 or send photos of the damage on WhatsApp.