What real tadelakt is
Tadelakt is a lime plaster from Marrakech that is compacted with a river stone and impregnated with black olive soap. The reaction of lime with soap forms a water-repellent layer on the surface, and the wall or bath becomes moisture-resistant with no tile and no joints. Traditionally hammams are finished this way, so the technique is designed for water.
Unlike tile, the surface is continuous and soft to the touch, with faint clouds and highlights, like silky stone. It is not an imitation of cement and not a high gloss: the colour is deep but calm, edges are rounded, and any shape (a niche, a basin, a monolithic bath) is made without joints. With wood and stone, tadelakt gives a warm, almost sculptural space.
Tadelakt or microcement: what is the difference
The difference is in the base, the sheen and the way it wears. Microcement is made with cement, polymers and sealer; tadelakt with lime and soap. Microcement gives an even, restrained surface that can take almost any texture. Tadelakt is softer and warmer, with a silky, uneven sheen.
In use, microcement sealer wears and is renewed; tadelakt gets its soap treatment renewed. Microcement resists scratches better; tadelakt is softer and can be marked by fingernails or a brush. Microcement is used more on floors, tadelakt on walls, baths and basins. For a seamless shower with sharp geometry and hard wear, microcement fits; for something organic and hand-made, tadelakt.
Does tadelakt handle constant water in a shower
It does, if done correctly: full waterproofing underneath, a slope to the drain, and soft lime rather than a rigid cement base. The soap film repels water, but it is not permanent, and in a shower where water runs daily it must be renewed. If not, the lime begins to absorb water, darkens in patches and loosens.
So water-resistant means designed for water with upkeep, not needing nothing. The zone under the shower head is made with extra care and the drain is chosen so water does not stand. A word on Barcelona: hard water leaves limescale on any finish, and on tadelakt it is easy to wipe off with a soft cloth after a shower, before it dries.
How tadelakt is made: substrate, coats, burnishing
The substrate is prepared as carefully as for waterproofing: a flat cement-lime screed or a dedicated backing, with a membrane and mesh on top. Lime putty with fine aggregate goes on in two or three coats while still wet and is compacted at once with a steel trowel, then burnished with a river stone in circular movements. The burnishing closes the pores and creates the sheen.
The surface is then impregnated with black soap, burnished again and left to mature. Each stage depends on humidity and temperature in the room, so the work takes days. The craftsman works wet on wet: if he stops halfway across a plane, a visible line is left at the join. That is why one person is assigned per plane and is not interrupted.
How to clean tadelakt without damaging it
Clean with a soft cloth or sponge, warm water and neutral soap, with no abrasives or acids. Acidic descalers and vinegar attack lime and strip the soap layer, and chlorine bleaches pigment. Stiff-bristle brushes leave scratches.
Daily care is short: after a shower, remove water with a squeegee or soft cloth and ventilate the room. Once a year, and more often in a heavily used shower, the surface is wiped with a black-soap emulsion or a dedicated care product, and it stays water-repellent. Light water marks and hairline cracks in corners are normal for lime: they do not signal a defect and do not affect protection.
Can tadelakt go on a floor
It can, with reservations. Tadelakt is softer than cement and wears faster; on a floor in a walkway, by the entrance or in a kitchen it soon loses sheen and takes marks. For a bedroom, a dressing room and a bathroom outside the shower zone it is acceptable, and a lime floor looks monolithic with the walls.
In a shower, the floor is usually stone or tile, and tadelakt is kept for walls and the basin. If you still choose it for a floor, prepare to see marks and accept them as part of the material. With underfloor heating lime is compatible, but the substrate and heating regime are agreed with the craftsman beforehand: sudden temperature changes cause cracks.
How BCN YARD can help with lime finishes
We find the craftsman and make a sample on your substrate so you see sheen and colour before the work starts, and we build the waterproofing and ventilation without which any lime in a bathroom performs badly. We run the project in Russian and Spanish, under contract with staged payments. Write to us and we will reply within an hour.
Frequently asked questions
How does tadelakt cost compare with tile?
It usually costs more than ordinary tile, because it is hand work by a craftsman over several days, and the surface needs a sample first. Compare it with complex tile, stone and joints: tadelakt has no tile or grout material, but more labour. The exact price comes from the estimate after a visit and a sample.
Does tadelakt crack?
Hairline cracks can appear in corners and junctions, because lime moves with the substrate. It is not a leak: the waterproofing lies under the layer. Larger cracks come from a moving substrate or faulty technique and are prevented with mesh and good preparation.
Is tadelakt suitable for a kitchen?
A splashback by the sink is possible: the surface resists moisture and splashes. But grease, acids and scrubbing damage the soap layer, so the working zone by the hob and sink usually gets stone or ceramic, and tadelakt is kept for walls and niches away from cooking.