Cracks, chips and holes in concrete flooring are more than just eyesores, they can be tripping hazards, damage equipment, or allow water to seep into the slab. If you’re searching how to repair a concrete floor or how to patch holes in concrete, this guide walks you through a reliable method that ensures long-lasting results.
Whether you’re repairing a warehouse, garage, or workshop floor, these steps can be used for holes of most depths — from surface divots to deeper voids.
Before we get to the how, let’s look at the materials you’ll need.
If you’re wondering what to use to fill holes in concrete floor surfaces, use only products designed specifically for patching concrete. Avoid generic fillers that lack bonding strength or weather resistance.
Start by shaping the hole so the patch material can grip firmly. Use a hammer and cold chisel to square up the sides and slightly undercut them — this helps lock the patch in place and prevents it popping out later.
This step is essential if you're repairing holes in a concrete floor slab or looking to fix holes in warehouse floors with long-term durability.
To help the new material adhere, use a concrete bonding liquid. Brush it onto the cleaned surface — especially around the edges of the hole.
Tip: Don't let the bonding agent dry before pouring. The concrete should go on while it’s still tacky.
This step is crucial whether you're fixing cracks or figuring out how to patch a cement floor without delamination.
Mix your chosen repair material according to the manufacturer’s instructions.
Whether you’re figuring out how to repair a hole in concrete floor or patch a corner crack, make sure you compact the patch well. Air pockets can lead to failure later on.
Once filled, grab a board or straightedge and screed across the hole using a rocking motion to level it with the surrounding floor.
If you’re looking to blend concrete patches so they match your existing floor, choose a colour-compatible repair mix or apply a surface stain later.
If you’re repairing an industrial slab and unsure when it’s safe to reopen, ask a professional. Improper curing can undo even the best patch.
We regularly advise commercial clients on:
From how to patch concrete slab surfaces to how to repair concrete steps, the approach is similar — clean edges, proper bonding, strong mix, and careful finishing.
For deeper holes, commercial concrete floors, or high-impact areas, a DIY fix might not be enough. We’re experienced in repairing and restoring industrial floors across the UK using specialised tools and high-strength materials.
We are the leading concrete flooring contractors in the UK, offering outstanding concrete finishing results with every project. For more information about our services, contact our team today on 01590 676 585.