Moroccan Tadelakt Bathroom: Application and Maintenance

When it comes to luxury wall finishes, few materials evoke timeless elegance and refined craftsmanship quite like Tadelakt, the authentic Moroccan lime plaster finish. An ancient form of Moroccan lime based plaster used in showers called ‘Tadelakt’ is formulaically, minerally and aesthetically identical to our materials. Plastered showers were common place for thousands of years. Unlike ordinary textured wall paint, which can feel flat or artificial, Tadelakt offers a handcrafted, seamless surface that breathes with the home while exuding warmth and sophistication. But while Tadelakt is renowned for its durability, maintaining its natural beauty requires careful upkeep.

Tadelakt is an ancient plaster finish with roots in Morocco, where its combination of lime soap plaster and application technique has been used for centuries to provide waterproof finishes and to beautify homes. It’s made from lime, polished smooth with a stone, and finished with a natural soap that reacts with the lime to create a water-resistant surface. Because of this unique chemistry, Tadelakt requires care methods that respect its natural composition.

Tadelakt, sometimes referred to as Moroccan plaster, is a traditional plaster indigenous to the Marrakesh region of Morocco that can be used as a stylish wall covering and alternative to tiles in bathrooms. Tadelakt provides a stylish alternative to traditional tiles in bathrooms, and the water-resistant plaster is applied seamlessly with no grout lines. By plastering walls with tadelakt, you're able to create a solid, waterproof surface that is seamless, has no grout lines and is resistant to mould, which perhaps explains why this traditional plaster style has become so popular in contemporary, minimalist homes.

Tadelakt is one of those rare materials that doesn’t just serve a function - it brings a sense of calm, texture and timelessness to a space. Whether it’s sweeping across a bathroom wall or softening the edges of a wet room, this traditional Moroccan lime plaster has a unique way of turning everyday surfaces into something quietly luxurious.

What is Tadelakt?

Tadelakt is a traditional Moroccan lime plaster that dates back centuries, originating in Marrakech where it was used to waterproof hammams (public baths), riads, and palaces. Crafted from natural hydraulic lime, marble powder, and mineral pigments, Tadelakt is not just a finish - it’s an artisanal surface treatment. Each wall is hand-burnished, creating a smooth yet subtly textured surface that shifts beautifully under light.

Read also: The Allure of Blue and White Tile

Tadelakt is a waterproof and decorative plaster with a distinct, mottled appearance. It is a natural, lime-based plaster and it can be tinted to almost any colour, meaning that it can be used to create colourful surfaces that don't require painting. Tadelakt has a subtle but luxurious sheen that creates a finish that's reminiscent on natural stone.

What sets Tadelakt apart from textured wall paint and other types of textured finishes is its unique combination of beauty, function, and sustainability. Unlike synthetic coatings or decorative paints, Tadelakt is a living, natural material. Its durability comes from its ability to breathe and from the lime-soap sealing reaction that occurs during application. This is why Tadelakt care is different from maintaining regular textured paint finishes or microcement.

Tadelakt’s soft character makes it easy to mould into smooth, round shapes with no seams left behind. Bold. Tadelakt excels as a finish across large surfaces, such as interior walls, kitchens, fireplaces, seats, shelves, vanity units, washstands, baths, pools, spas, shower cubicles, wet rooms and steam rooms. You can colour the product with natural earth pigments or with synthetic pigments to offer a broader range of choices. You then polish the surfaces to a shiny finish, with a slight variation in colour. Waterproofing. Tadelakt creates waterproof features through both its inherent properties and its application technique.

Tadelakt application is labour-intensive but immensely rewarding. It involves applying the lime plaster in many thin coats to an underlying surface, such as a stone wall, using various trowels depending on the surface and desired shape. Once you have applied the layers, you develop the characteristically smooth and polished look by using a polishing stone. The final step is to seal the plaster and make it waterproof by applying an olive oil soap solution.

Tadelakt has been used for the walls in this bathroom as well as the vanity doors. (Image credit: Tadelakt London)

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Application of Tadelakt

You can apply the best Tadelakt Moroccan plaster yourself using a range of specialised tools. You apply the plaster using trowels of varying shapes that serve different purposes depending on the type of surface, space, or area to which you are applying it.

Here are general steps for applying Tadelakt in wet areas like shower enclosures:

1. Mesh the seems of board with adhesive fiberglass tape.
2. DO NOT USE CEMENT OVER THE FIBERGLASS TAPE.
3. Apply two coats of Vasari Mastercoat or until the surface is smooth. Wait 2-3 days for complete drying between coats. Mastercoat will adhere to elastomeric primer.
4. Apply one or more coats of any Vasari plaster or Lime Paint. Marmorino is the most common finish coat in showers. We recommend burnishing / polishing the last coat of plaster (or Lime Paint) to give greater durability and more natural water resistance.
5. Seal the final coat of plaster with or Lime Paint with Vasari Mineral Sealer. Apply two simultaneous coats wiping down and buffing any excess sealer. Pay particular attention to where the wall meets the floor and fixture openings.
6. Apply two simaltaneous thin coats of Vasari Wax. Pay attention to where the wall meets the floor and fixture openings. Buff out as it dries.
7. Wait 24 hours before using shower. If any darker areas apear, let them dry and rewax them for waterproofing. Follow instructions for specific materials on product data sheet.

Lime Paint can be used in showers only when applied on Mastercoat. It can be applied opaque or thinned with water to create a lime wash for more color translucency. Appply sealers as recommended above.

If using lath and cement:

• Using diamond lath, apply one coat of cement scratch coat, two coats of cement (scratch and brown coat).
• Allow the cement to dry 30 days before applying topcoats.
• Apply elastomeric primer or waterproofing membrane.
• Apply 2 coats of Shower Basecoat.
• Apply at least 3 coats of plaster , Mineral Sealer and Vasari Wax.

Allow for complete drying between all layers.

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If cement board, fiberglass board and other boards made for wet areas:

• Always use screws and not nails to install any board product.
• Apply elastomeric primer.
• Float the entire area twice with Vasari Mastercoat to ensure a smooth and level surface.
• Apply at least 1 or more coats of finish plaster with sealer and wax.

Allow for complete drying between all layers.

We recommend at least a half inch tile trim around the base of the shower pan to avoid potential water intrusion through potenial fissures around the shower pan. Always make sure that water drains out away from the wall. Corner joints can be caulked with shower grade silicone, grouted or left with a gap and a metal riglet. Assume that the wall and floor will move independently resulting in a potential fissure / cracking around the edges, especially if grouted. Consult a professional for further information for best methods and materials.

Ceilings are usually plastered in showers. Vasari plaster will absorb excess humidity from the shower and not form droplets of water on ceiling. It is often best if ceilings are not sealed so they can absorb the steam. If the shower is tiled, and there is exposed plaster on the upper portion of the stall which not in constant direct contact with water, it is not necessary to seal it.

Plastering entire bathrooms is a always a great idea. Not only is it beautiful, but the plaster absorbs excess humidity, naturally kills mold and mildew (85% more effective than anti-microbial latex paint) and generally keeps the bathroom feeling fresh and clean. If plastering the entire bathroom including the shower, it is necessary only to prep the shower area for Mastercoat or water proofing. The rest of the bathrooom walls can be normally primed drywall when preparing for plastering or Lime Paint.

Maintaining Tadelakt Surfaces

Regular and mindful maintenance is essential to preserving the natural beauty of your Tadelakt surfaces. Tadelakt rewards gentle, consistent care. While Tadelakt lime plaster is naturally water-resistant and stain-resistant, it is not completely stain-proof. Like all natural wall finishes, Tadelakt improves with age when properly maintained. For longevity, always work with certified Tadelakt applicators.

It is not difficult to maintain tadelakt surfaces. To prevent damage to tadelakt surfaces, it is necessary to apply the correct care. To maintain the water-repellent property, tadelakt must be regularly re-soaped in splash water areas.

Most of the time, caring for Tadelakt is refreshingly low-effort. After using a Tadelakt shower or basin, it’s best to rinse the surface lightly and wipe it dry with a soft cloth or swipe with a squeegee. For regular weekly cleaning, a soft, damp cloth is usually enough. If you’d like to add a little extra care, use a mild, natural soap - preferably a traditional olive oil-based soap like black soap or diluted savon de Marseille. Avoid using spray cleaners, even if they claim to be ‘natural’. Many contain citrus or vinegar, which can degrade the lime surface.

Every so often - say, once a month - it’s worth giving your Tadelakt a slightly deeper clean and condition. Mix a small amount of soap with warm water and use a soft sponge or cloth to wash the surface. For seasonal maintenance, some homeowners like to apply our Idrowax product to reinvigorate the water resistance and sheen.

Initial Treatment: After the new tadelakt surfaces are completely dry but after two days at the latest, dilute Marseille soap 1:10 with water and apply evenly with a soft brush. After a short tightening, polish with a plastic foil ball (HDPE). For maintenance, this treatment should be repeated approx. Once a year, supplementary Carnauba wax emulsion is applied and the surface is polished back to its original shine.

Regular Cleaning: Wash off dirt with lukewarm water and the addition of a little Marseille soap (approx. 1-2 tablespoons to 5 litres of water) and a soft cloth or sponge.

Drying: Tadelakt must be completely dry once a day. If Tadelakt remains wet for too long, discolouration, water marks and dull patches may result.

What to Avoid

It is imperative to refrain from using commercial household cleaners, scouring agents and scouring pads. Acidic juices such as orange or lemon juice, wine and vinegar can also damage the surfaces. Tadelakt surfaces are not acid-resistant. Harsh cleaners such as bleach and limescale removers can compromise the finish. Avoid using spray cleaners, even if they claim to be ‘natural’. Many contain citrus or vinegar, which can degrade the lime surface. Skip the bleach and mainstream bathroom sprays, even if they’re labelled “gentle”.

Acrylic sealers can also be used at your own risk. Synthetic sealers can be advantageous for a more matte finish or for greater abrasion resistance. The disadvatages of synthetic sealers is that can trap water and can’t breath. They are also very difficult to repair. The Vasari sealer and wax is breathable and can be maintained indefinitely. Test synthetic sealers thouroughly before applying inside showers.

Potential Issues and Solutions

While Tadelakt is strong and long-lasting, it’s not invincible. The most common issues tend to arise from well-meaning but misguided cleaning routines. Over time, you may notice slight changes in the surface - a small scratch, a patch that’s lost its sheen, or a mark from a dropped bottle. These aren’t disasters; in fact, they’re part of the character of a natural material. Light scuffs or dull spots can often be improved by applying a soap solution and gently polishing the area.

Persistent water streaks can naturally weather plastering and leave a patina or water staining over time. In general, if the substrate is water proofed, unsealed plaster with heavy water contact will just patina the plaster without any structural damage. Sealer and wax is mostly used to avoid potential discoloration or permanent staining.

For deeper imperfections - such as chips, water stains, or areas where the soap and wax layers have worn away - it’s worth calling in a professional. One of the advantages of Tadelakt lime plaster is that it is not only durable but also restorable. The beauty of Tadelakt is that many surfaces can be restored rather than replaced, making it a sustainable, eco-friendly finish that aligns with the values of modern architects, designers, and eco-conscious homeowners.

What Happens If You Don’t Seal It?

Assuming the substrate is waterproofed and there is no water instrusion into the panel board or substrate, not sealing plaster might create lighter and darker areas where it is most water soaked. Essentially, the plaster will naturally patina. If the substrate is contained and waterproofed, then not sealing it will have little or no effect except for some potential discoloration.

As the plaster repeats a cycle of wet and dry, it will become harder and more naturally water resistant as a result of carbonisation.

Additional Information

• All Vasari products can be cleaned using water or soap in most instances. For tougher stains, lacquer thinner, nail polish remover, acetone and mild detergents can be used to remove tougher stains.
• Do not use bleach, chlorine or acidic cleaners. Salts and chlorine can damage plaster if not sealed or protected.
• We always recommend Vasari Wax as the final coat in wet areas. This will make the plaster waterproof and easy to maintain. Wax can be re-applied at any time for general maintenance.
• Flame Spread: ASTM E84, rating of 5; UBC Class I. NFPA Class A.
• Sound: ASTM 423-07; SAA: 0.09; NRC: 0.10.
• VOC & LEED: 0-VOC’s, Up to 8 LEED Point Certified.
• Hazardous: No known hazardous waste or by-product. No known hazardous decomposition of product or byproducts are known to have occurred.
• Health Hazards: Do not ingest or inhale powdered materials for prolonged periods of time. Acute gastric or bronchial irritation will result if ingested or inhaled.
• Areas officially not recommended for Vasari products: Water containers, such as tubs or sinks and floors.

Safety Precautions: KEEP OUT OF REACH OF CHILDREN. AVOID EYE CONTACT WITH. SEEK IMMEDIATE MEDICAL ATTENTION IF INGESTED OR EXPOSED TO EYES. AVOID PROLONGED EXPOSURE TO SKIN. WEAR SAFETY GOGGLES AND GLOVES WHEN WORKING WITH PLASTER. WEAR NIOSH APPROVED RESPIRATOR WHEN WORKING WITH DRY MIXES OR WHEN SANDING PLASTER.

Tadelakt application process

Tadelakt vs. Microcement

One of the most common searches is microcement vs Tadelakt, as both are popular luxury finishes. Here’s a quick comparison:

• Tadelakt - Softer, organic, seamless, breathable, with a natural sheen.
• Microcement - Strong, modern, and industrial.

Is Tadelakt Hard Wearing?

This reaction results in a surface that is water and scratch-resistant, hard and durable. However, it's not always recommended for use on floors. "We recommend it for use only in areas where you will not wear hard shoes, as grit and small stones can easily scratch the surface," says Valentin. There are other alternatives for flooring, such as microcement that offer a similar finish for flooring that will fair better, and tadelakt walls are also often used with tiled floors.

Can Tadelakt be Used in a Bathroom?

Tadelakt is commonly used in bathroom design, thanks to the waterproof membrane which is created during the chemical reaction by the olive soap process. Tadelakt is also suited for use in shower enclosures and wet room ideas. The seamless application means that bespoke waterproof details can be easily created, such as shower niches.

Does Tadelakt Crack?

Applying the tadelakt in two coats should help to reduce the chances of any cracks forming while the plaster hardens. Small cracks during the installation can often be buffed out during the olive soap stage. However, that doesn't mean it can't be learned by a competent DIYer.

How Expensive is Tadelakt?

Tadelakt is a relatively expensive finish, especially compared to tiles. You can expect a starting price for wall installations, including supply and install, from £180/m2.

With the right care, Tadelakt walls and surfaces can last for decades, proving that this Moroccan lime plaster is more than just a design trend - it’s an investment in long-lasting beauty and sustainability. All it takes is gentle cleaning and routine applications of black olive soap to preserve both its luxurious sheen and water-resistant performance.

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