Microcement walls

Microcement Walls and Wet Rooms

On walls the material behaves differently to a floor. There is no abrasion to design for, so the specification shifts to waterproofing, corner detailing and how light falls across the trowel work.

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Free site visit across Sussex, Surrey, Kent, Hampshire & London. Family-run, based in Hurstpierpoint.

Where this works

  • Walk in showers and full wet rooms
  • Splashbacks that run into worktops without a joint
  • Feature walls behind beds and fireplaces
  • Hotel and restaurant washrooms
  • Vanity units and built in furniture wrapped in the same finish

How we install it

  1. 1
    Tank the wet zone

    Shower areas get a liquid applied membrane with reinforcing tape at every internal angle, pipe penetration and the tray junction. Microcement is not a waterproofing layer and we never sell it as one.

  2. 2
    Flatten before you finish

    Wall microcement is unforgiving of a bowed board because raking light shows every plane. Anything out by more than 2 mm across a metre gets floated flat first.

  3. 3
    Two skim passes

    Two thin passes with a flexible trowel, the second worked to build the cloud or linear movement agreed on your sample board.

  4. 4
    Seal and repel

    Two coats of polyurethane, then a penetrating repellent inside the shower so water beads rather than sitting in the sheen.

Common pitfalls we prevent

Treating microcement as the waterproofing rather than the finish, which is how wet rooms fail behind the wall
Silicone applied over an unsealed edge, so the joint discolours and lifts within months
Mixing sheens between wall and floor by accident, which makes an otherwise seamless room read as two jobs

Frequently asked

Is microcement suitable for a shower?+

Yes, when the enclosure is tanked with a liquid membrane and taped at all junctions first. The microcement then sits on top as the finish, sealed with polyurethane and a water repellent.

Can you apply it over bathroom tiles?+

Usually yes. Tiles are tap tested, degreased and primed, and the grout lines are filled at basecoat. It saves the mess of a full strip out and keeps the room a few days shorter.

How do the corners look with no trims?+

Internal angles are mesh taped and pulled by hand, external arrises are formed with a flexible blade. The result is a soft square edge rather than a metal trim line.

Does it grow mould like grout?+

There are no grout lines, so there is nothing for mould to colonise. Cleaning is a neutral spray and a cloth, and the surface dries quickly because there is nothing porous exposed.

Can a wall be repaired if it is damaged?+

Yes. A localised area is abraded, re-skimmed and blended, then the whole panel is resealed to the nearest corner so the sheen stays consistent.

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