How We Repair Cracked Cement Floors Before Epoxy Application

Applying epoxy directly onto a cracked cement floor is like painting over peeling wallpaper — it may look good at first, but it won’t hold up.

At Amazing Epoxy, surface prep is the backbone of our work — and crack repair is one of the most critical steps. Here’s how we do it right to ensure your epoxy floor looks flawless and lasts for years.

Why Repairing Cracks Matters

Concrete cracks aren’t just an eyesore — they’re a threat to durability. Left untreated, cracks can lead to:

• Moisture getting trapped under the epoxy
• Delamination (peeling or lifting)
• Uneven textures or visible imperfections

That’s why every project starts with a detailed inspection and crack repair process.

Step-by-Step: How We Repair Cracked Concrete

1. Surface Cleaning

We start by removing dust, grease, and debris using pressure washing or power tools. This helps expose the full extent of the cracks and ensures a clean surface.

2. Widening the Crack

To ensure strong adhesion, we gently grind or widen each crack with a diamond blade — this gives the filler material something solid to grip onto.

3. Filling the Crack

We inject a high-strength epoxy or polyurethane-based filler, tailored to the size and depth of the crack. This seals the area and prevents future spreading.

4. Sanding Smooth

Once the filler has cured, we carefully sand the repaired area flush with the surrounding floor, creating a perfectly smooth surface.

5. Full Surface Grinding (If Needed)

If the entire slab is uneven, we use industrial grinders to smooth out the floor — ensuring maximum adhesion for the epoxy coating.

Why Our Process Delivers Results

• Prevents peeling or bubbling
• Creates a smooth, professional finish
• Strengthens the surface for long-term use
• Extends the life of your epoxy floor

Learn more about our epoxy services and installation process

Final Thoughts

Crack repair might not be the flashiest part of flooring, but it’s what makes the final result long-lasting and flawless.

At Amazing Epoxy, we go the extra mile to repair, prep, and perfect every surface before the epoxy ever touches the floor. The result? A smooth, durable finish you’ll love for years.

Curious how it looks in real life?

Curious how it looks in real life? Browse Our Gallery to see before-and-after epoxy transformations.