Microcement flooring

Microcement flooring has become a default choice for anyone who wants the warm, minimal look of polished concrete without the weight, thickness or upheaval of a poured floor. Because the coating is only a few millimetres thick, it can usually be applied straight over what you already have, which is why so many renovations reach for it.

What makes a microcement floor different

A microcement floor is a continuous surface. There are no tile joints, no grout to discolour, and no board edges, just one flowing plane from wall to wall. That seamlessness is both an aesthetic and a practical win: fewer joints mean fewer places for dirt and water to collect, and the eye reads the room as larger and calmer.

The finish is also genuinely thin. At around 2-3 mm, microcement rarely causes the problems a new tiled or timber floor would. Door clearances, transitions between rooms and skirting heights usually stay workable, so you avoid trimming doors or rebuilding thresholds. That is a big reason it is chosen for renovations rather than new builds, where every extra millimetre of build-up costs money and disruption.

It is worth being clear about what microcement is not. It is not a paint, and it is not a thin film that sits on top of a floor like a sticker. It is a cement-based system, applied in layers, that bonds to and becomes part of the floor build-up. The colour runs through the material rather than being printed on, so light wear does not expose a different colour underneath.

• Seamless across the whole floor, and up walls if you want a continuous look.
• Thin enough to apply over existing floors without major level changes.
• Hard-wearing once sealed, with strong resistance to foot traffic and scuffing.
• Available in a wide colour range, from pale greys to warm earth tones and near-black.
• Compatible with underfloor heating.

Where microcement floors work well

Microcement suits a broad range of rooms, and in practice it earns its keep most in spaces where joints would otherwise break up the look or trap dirt. The honest answer to “where does it work” is “almost anywhere the substrate is stable”, but a few rooms are worth calling out.

Open-plan living areas. This is where a seamless floor shines. A single continuous surface running through a kitchen, dining and living zone ties the space together and makes it feel bigger. No thresholds, no changes of material, no grout lines cutting the room into sections.

Kitchens. Microcement gives a robust, wipeable surface that handles spills, dropped pans and constant traffic. Once sealed it shrugs off most kitchen splashes, and because there is no grout, there is nowhere for grease and crumbs to lodge.

Hallways and entrances. These are the hardest-working floors in most homes. A sealed microcement floor copes with grit, wet shoes and daily footfall, though a doormat at the entrance is still sensible to catch the abrasive grit that does the real damage to any floor.

Bathrooms and wet rooms. In wet areas microcement performs well once correctly sealed, which is why it appears so often in a microcement bathroom. The continuous surface can run up the walls and into a microcement shower, and proper falls and tanking underneath remain essential. The microcement is the finish, not the waterproofing layer.

It is less suited to floors that flex, for example certain suspended timber floors that move underfoot. The golden rule is that microcement is only ever as stable as the surface beneath it. On jobs that go wrong, the cause is almost always movement in the substrate rather than the microcement itself.

How a microcement floor is installed

A professional floor installation generally follows these stages, and the bulk of the skill (and the bulk of the value) is in the preparation rather than the final look.

1. Assessment and preparation. The existing floor is checked for soundness and moisture, then cleaned and primed. Movement joints, hairline cracks and problem areas are addressed before anything else goes down.
2. Priming. A bonding primer is applied so the base coats grip the substrate. The right primer depends on what is underneath, tiles, screed and timber-based boards each call for a different approach.
3. Reinforced base coats. Base layers are applied, usually with a fibreglass mesh embedded across the floor for crack resistance. This is the structural heart of the system.
4. Finish coats. Two fine coats create the colour and the final texture. These are the layers that decide how the floor reads, from flat and uniform to softly mottled.
5. Sealing. A penetrating sealer and a hard-wearing topcoat add stain and water resistance and set the final sheen, anywhere from dead matt to satin.

Curing and sealing take time, and rushing this stage is the most common way to ruin an otherwise good floor. Most floors need a few days before they are ready for normal use, and full cure of the sealer can take a week or two longer, so plan the project around that downtime. I usually recommend keeping pets, heavy furniture and rugs off the floor until the sealer has properly hardened, because a rug laid too early can mark a fresh surface.

A point that surprises some clients: the finished floor will show the applicator’s hand. Microcement is hand-trowelled, so subtle variation in tone and texture is part of the material, not a defect. If you want a perfectly uniform, machine-flat surface with zero movement in the colour, microcement is the wrong choice and a resin floor may suit you better.

Microcement flooring and underfloor heating

One of the strongest pairings in modern renovation is microcement over underfloor heating. Because the coating is thin and dense, it conducts heat efficiently and warms up quickly, unlike thick timber or carpet that insulate the floor and waste energy. There are no grout lines or board gaps to interrupt the heat, so the warmth feels even underfoot rather than patchy.

The important detail is commissioning. The heating system should be fully cured, tested and switched off before microcement goes down, then brought back up to temperature slowly afterwards rather than blasted to full heat on day one. Following the manufacturer’s heat-up schedule protects the finish from thermal shock and keeps it crack-free. This applies to both water-based and electric systems.

Microcement works over both wet (water-pipe) and electric underfloor heating, and over the screeds or boards that those systems sit in. The substrate still has to be sound and dry; underfloor heating does not excuse poor preparation, and in fact it raises the stakes, because a floor that is repeatedly heated and cooled puts more stress on any weakness underneath.

Durability and everyday maintenance

Sealed microcement flooring is tough and easy to live with. The sealer is the wear layer, so the way you treat it largely decides how long the floor keeps its looks. Day-to-day care is straightforward:

• Sweep or vacuum regularly to lift grit, which is the main cause of fine scratching.
• Mop with a pH-neutral cleaner and warm water; wring the mop so the floor is damp, not flooded.
• Wipe spills reasonably promptly, especially acidic ones like wine, citrus or vinegar.
• Avoid harsh, acidic or strongly alkaline products and abrasive scrubbers, which degrade the sealer over time.
• Use felt pads under furniture legs and a doormat at entrances.
• Re-apply or refresh the topcoat periodically, depending on traffic, to keep the surface protected.

That maintenance routine is genuinely light, and refreshing the sealer is far simpler than replacing tiles or boards. How often you need to re-coat depends on use; a busy hallway will want attention sooner than a spare bedroom. Exact intervals vary by product and traffic, so follow the supplier’s guidance for the specific system you have.

Scratches, marks and repairs

No floor is indestructible, and it helps to know how microcement behaves when life happens to it. Like any seamless floor, microcement can scratch if you drag heavy furniture or grit across it. Most of what people call “scratches” are actually marks in the sealer rather than the cement itself, and those are the easiest to deal with: the affected area can often be cleaned, lightly abraded and re-sealed.

Deeper damage, a chip from a dropped knife or a worn patch in a high-traffic line, is repairable too, but it is a job for a skilled applicator who can fill, colour-match and blend the area into the surrounding surface. Because the floor is seamless, a repair is most convincing when the original colour and product details were recorded at installation, so keep that paperwork. I always advise clients to ask their installer for the exact product, colour reference and batch so a future repair has the best chance of disappearing.

The flip side of seamlessness is that you cannot simply swap out one “tile”. A repair blends rather than replaces. In practice this is rarely a problem on a well-prepared floor, but it is an honest trade-off to weigh against the look of a tiled floor where a single damaged unit can be lifted and replaced.

Microcement flooring versus a poured concrete floor

People often weigh microcement against a true polished concrete slab, and the two are easy to confuse because the look overlaps. They are very different things in practice.

Factor	Microcement floor	Poured concrete floor
Thickness	Around 2-3 mm	Tens of millimetres or more
Weight added	Negligible	Significant structural load
Suits renovations	Yes, over existing floors	Rarely, usually new build only
Upper floors	Works on most sound floors	Often impractical
Install disruption	Moderate, no demolition	High, wet trade and long cure
Colour and finish	Wide colour range, hand-trowelled	Limited, depends on the mix
Repairability	Blend and re-seal	Grinding or patching the slab

A poured floor is thick, heavy and structural; it usually only makes sense in new builds or ground floors that can take the load and the build-up height. Microcement gives a very similar concrete aesthetic at a fraction of the thickness and weight, which is why it dominates renovations and upper floors where a poured slab simply is not practical. If you already have a sound concrete slab and want the polished look, polishing the existing concrete is a third route worth pricing up alongside microcement.

Is microcement flooring worth it

Microcement flooring sits in the premium bracket because it is labour-intensive and skill-dependent. The quality of the result depends heavily on preparation and the applicator’s experience, far more than on the brand of product, so the installer you choose matters more than almost any other decision. Prices vary widely by region, substrate condition and finish, and the cheapest quote is rarely the right one for a hand-applied finish.

For a seamless, modern, durable floor that goes over your existing surface and works with underfloor heating, few finishes match it. It is worth it when you value the continuous look, when ripping out the old floor would be costly or messy, and when you are happy with a hand-trowelled surface that carries some natural variation. It is less worth it if you want a perfectly uniform floor, if your substrate moves, or if your budget is tight enough that a quality installation is out of reach.

If you want the concrete look without the concrete, microcement is usually the most practical route. Get the substrate checked, choose an experienced applicator, see samples of their actual work rather than brochure photos, and the floor will reward you for years.