Concrete floor sealing
Bare concrete dusts, stains and soaks up oil. Sealing it stops that.
Free, no obligation. One local installer prices it, not five.
Sealers compared
| Sealer | What it does | Lasts |
|---|---|---|
| Densifier (silicate) | Soaks in and hardens the top of the concrete. No film, no shine on its own | Long, it's in the concrete |
| Acrylic sealer | A thin film that cuts dust and stains | Wears on busy routes; renewed often |
| Epoxy seal coat | A thin, hard, clear or tinted film | Years on light traffic |
| PU seal coat | Like epoxy, more flexible, UV stable | Years; won't yellow |
Which one for your floor
- A store room, plant room or shed that only needs to stop dusting: a densifier or an epoxy seal.
- A garage: a seal coat stops the dust but won't hide oil stains or take hot tyres like a full coating. See garage floors.
- A polished or exposed concrete look you want to keep: a clear densifier or a matt PU.
Before sealing
Even a clear seal needs clean, open concrete: oil and old paint ground off, the dust vacuumed. A sealer on a dirty slab seals the dirt in.
Materials for a two-pack floor sealer cost from about €2.60 a m² a coat, ex VAT.
Your floor, coated
Take a photo of the garage or the room, pick a finish and a colour, and see it before anyone quotes. Free, in under a minute.
- Upload a photo, or answer four quick questions.
- We pass it to one installer that covers your county.
- They ring you with a written price.
Preview of your photo, not a guarantee. Your photo goes to Google's Gemini service to make the picture.
A photo that works
- Daylight, or every light on.
- From the doorway, so most of the floor is in the shot.
- Cars, bikes and boxes can stay where they are.
- Hold the phone at chest height, level, not pointed at your feet.
Get a price for your floor
Four taps and your number. It goes to one epoxy flooring installer that covers your county, and they ring you back to look at the floor and give you a written price.
Epoxy flooring & epoxy floor paint guides & price breakdowns
Straight answers to what people ask most: itemised costs, specifications, planning or grants, and what to check before you book.
More guides & resources: Epoxy vs polished concrete · Epoxy flooring over underfloor heating · All guides & calculator hub · Technical & trade glossary · Frequently asked questions · All areas covered · About this site
Questions people ask
How do you seal a concrete floor?
Grind or clean it back to open concrete, vacuum, then roll on the sealer in thin coats.
Does sealing stop concrete dust?
Yes. A densifier hardens the surface; an epoxy or PU seal puts a film over it.
How often does a sealed floor need resealing?
Acrylic sealers wear fastest. Epoxy and PU seal coats last years on light traffic.
Is sealing cheaper than an epoxy coating?
Yes, but it does less. It stops dust and light stains; it won't cover a patched slab.
Epoxy flooring & epoxy floor paint across all 26 counties
Requests from all 26 counties go to one local specialist who covers your county — from Dublin, Cork, Galway and Limerick to Kildare, Meath, Wicklow, Waterford and Donegal. Pick your county below for local prices, specifications and advice. Compare all areas covered →
Get a free quote for your floor
Four taps and your number. One epoxy flooring installer that covers your county rings you with a price. Nothing is agreed until you accept it.