Concrete Grinding & Surface Prep in Grand Forks, ND

Concrete looks solid, but at the surface it's a story of laitance, sealers, old paint, oil contamination, and micro-cracking. A coating bonds to whatever it touches — so if it touches dust and residue instead of clean, open concrete, it fails.

What Proper Surface Prep Involves

1. Diamond grinding — Walk-behind grinders with diamond tooling remove the weak surface layer, old coatings, and contamination while opening the concrete's pores so the new coating can key in mechanically.
2. Crack and joint repair — Settlement cracks, control joints, and spalled areas get filled and repaired so the finished floor is smooth and structural movement doesn't telegraph through.
3. Moisture testing — Critical in the Red River Valley, where slabs sit close to the water table. High vapor emission calls for a mitigating primer — skipping the test is how basement floors end up blistering.
4. Spot repairs and patching — Pitting from years of salt exposure gets patched flush before coating.

Why Grinding Beats Acid Etching

DIY kits tell you to acid-etch the floor. Etching can't remove sealers, paint, or oil contamination, leaves the surface profile inconsistent, and introduces water into the slab right before you coat it. Mechanical grinding does what etching pretends to: it makes the concrete genuinely ready for a garage epoxy floor or commercial coating that actually bonds.

Standalone Grinding Services

Not every floor needs a coating. We also grind concrete as a standalone service — removing failed coatings and mastic, flattening trip hazards and high spots, and prepping slabs that another trade will finish. That includes shop and warehouse floors around Grand Forks where an old coating needs to come off before anything new goes down.

The Foundation of Every Job We Do

Whether the finished floor is flake, metallic, or a fast-cure polyaspartic system, it starts the same way: with prep done right. That's the difference you're paying for over a weekend DIY kit — and it's why we back our installations with a written warranty anywhere in Grand Forks and the surrounding area.