Before you buy

Check if this kit is right for your bathroom

This solution is designed to renovate jointed surfaces (tiles, mosaic, floor tiles…) without removing them. Check these four points before choosing size and colour.

Compatible surface

Surfaces with stable joints: tiles, mosaic, floor tiles, terrazzo or marble. This is not the right kit for plaster, drywall or cement substrates.

Coverage

Measure the height × width of each surface. The calculator adds a 10% margin and recommends the right kit size, or a combination for larger projects.

What's included

Joint filler, primer, microcement base coats, finish, varnish, additive and sandpaper: the complete layer-by-layer system.

What you need separately

Sealer roller, polycarbonate trowel and basic tools. You can find them in microcement tools.

FREE shipping included in the price. Delivery times depend on your country; you will see the estimate at checkout.

Step-by-Step Guide

Everything you need to know before you start

What’s included and what do I need separately?

The kit includes all the Smartcret system products needed for your surface and your square metres: you will find them detailed one by one, with their quantities, in the ‘Description’ tab below. You will also need a sealer roller, a polycarbonate trowel and basic protection and application tools. The microcement comes ready to use, already pigmented; only the final coat of varnish is mixed with its booster.

How do I choose the coverage?

Measure the surface to be covered: for walls, width × height of each section; for floors, worktops or furniture, length × width of each face. Subtract only large openings, add up the total and add a 10% margin. Choose the kit whose m² is equal to or greater than the result; if in doubt between two, go for the larger one. You can also use the calculator in the selector.

How long does the project take?

The full project takes 3 days. The varnish reaches full cure from 7 days.

Can I return or exchange the kit?

Yes: you have 14 days from delivery for exchanges and returns. Return shipping is at the customer’s expense and your order number is enough for us. See the full conditions.

Is it right for my surface?

Each kit is formulated for a specific project and surface: you will find it in the kit name and in the line with ✓ above the coverage selector. If your surface is different (for example, plasterboard instead of tiles), use the assistant at the top and we will take you to the right kit. First repair any loose piece, active crack or damp problem.

Description

What’s inside the 24 m² mcirocement kit for bathroom walls with joints

One box. All your walls. Zero joints. And a bathroom that’s headed straight to the top of your Pinterest board.

This microcement kit for up to 24 m² of bathroom walls with joints lets you renovate without removing a single tile. No noise, no debris, no construction work. Just you, your roller, and a full-on DIY transformation.

Designed for non-absorbent bathroom walls like tiles, mosaic, marble or porcelain. Easy to apply, no experience needed. It’s ready to use! A single mix — the varnish with its enhancer at the end. Here, we’re all about DIY. And the best part? It looks professional from the very first layer.

Smart Jointer (3 x 1.5 Kg): wave goodbye to the past. This joint filler evens out the surface and gets it perfectly prepped for a fresh start.
Smart Primer PLUS (3 x 1 L): invisible grip. A ready-to-use primer that prepares non-absorbent bathroom walls for what’s coming. Fast drying, solid, and drama-free.
Smart Base (3 x 16 Kg): now it’s getting serious. Pigmented base microcement with depth and attitude. Sets the foundation in style.
Smart Liso (2 x 6 Kg + 1 x 3 Kg): the final touch that changes everything. Smooth, seamless, and elegant finish. You see it, you touch it… and you’re in love. Pre-coloured finishing microcement, ready to go.
Smart Varnish (1 x 5L): your ultimate shield. A pro-grade varnish that protects against water, humidity and everyday wear. Matte or satin? You decide.
Smart Booster (1 x 250 g): the not-so-secret weapon. Mix it with the varnish to level up its toughness—big time.
Sandpapers (18 of 40 grit, 30 of 220 grit, 18 of 400 grit): because every layer deserves attention. Sand, refine, and shine with pride.

📌 Before you get started...

This kit doesn’t include the Smart Roller or the polycarbonate trowel, but you can add our tools pack to make your bathroom shine—and sparkle.

Application

How to apply the 24 m² microcement kit for tiled bathroom walls

There’s no construction work here—just transformation. Get ready to turn those tiled walls into a sleek, seamless surface with zero grout lines in sight. With this microcement kit for up to 24 m² of tiled bathroom walls, you’re in control. Because transforming your bathroom in a big way can totally be a solo mission.

The recipe for success? Patience, a trowel in one hand, a roller in the other… and your favourite playlist on repeat.

1. Clean slate, ready walls

Start with a deep clean—no dust, grease or damp allowed. Got cracks or uneven areas? Time to fix them.

Then bring in Smart Jointer: fill the joints and smooth the surface to create a blank canvas.

🕒 Drying time: 24 h. Sandpaper: grit 40.

2. Prime it like a pro

Apply Smart Primer PLUS gently and evenly. One thin coat over marble, mosaic, porcelain or tiles, then wait 30 minutes. That’s when the magic kicks in.

3. Layer by layer, it takes shape

Now for Smart Base. Apply two coats: use the Smart Roller, then smooth with a 45° angle plastic trowel. Wait 6 hours between coats, then sand lightly.

🔧 Sandpaper: grit 40.

This is when your bathroom starts to glow.

4. Time to finish strong

Enter Smart Liso, the smooth, joint-free finish. Same tools, same routine: two coats with 6 hours in between, then one final sanding.

🔧 Sandpaper: grit 220.

The result: a sleek, continuous surface so elegant it’ll reflect in the mirror.

5. Lock in the wow

Mix Smart Varnish with Smart Booster and apply three super thin coats. Wait 4 hours between layers, sanding after the first and second.

🔧 Sandpaper: grit 400.

🕒 Full curing: after 7 days.

Choose matte or satin finish—both give your bathroom wall total protection against water, steam and daily use.

🧠 Smartcret tips for drama-free application:

✔️ Always sand by hand.
✔️ Trowel at a 45° angle. It’s a game changer.
✔️ Thin coats = pro results. Don’t overdo it.
✔️ Give the varnish time. It deserves it (and so do you).

Best part? You do it all yourself. No builders, no dust, no endless works. Just you, your bathroom… and a freshly finished wall that screams “I made this!”

See the full Smartcret guide

Technical data sheets

Technical data sheets for the 24 m² ready-to-use microcement kit for bathroom walls with joints

Are you into DIY but don’t leave anything to chance? Then this block is for you. Here you’ll find the technical data sheets for every product included in the microcement kit for 24 m² of bathroom walls with joints. Because applying is easy—but knowing what you're using? That’s what makes you a pro.

Specification sheet Smart Jointer

Specification sheet Smart Primer Plus

Specification sheet Smart Base

Specification sheet Smart Liso

Specification sheet Smart Varnish

Success stories: how our customers rate Smartcret

4.6/5 ★ (65 reviews on Google)

Christopher Berumen

My wife and I had been looking into microcement for our bathrooms and found Smartcret. Being from the US we worried about importing, but our kits arrived within a couple of weeks. We DIY'd with a contractor friend and LOVE how it came out — smooth, waterproof, and the colours match the catalogue perfectly. If you're in North America, watch for sales to offset shipping costs!

★ ★ ★ ★ ★

Marcus Sprigens

The solution for revamping a tiled bathroom is Smartcret. Amazing product, very high quality with a smooth to touch finish, a pleasure to walk on in bare feet. No mixing powder and liquid as it comes ready to apply. Super happy with the results and great customer service.

★ ★ ★ ★ ★

Dee Moe

We used Smartcret for our bathroom walls and it turned out amazing. It was a long process but the steps were easy enough to follow. They were very supportive on WhatsApp and were there every step of the way.

★ ★ ★ ★ ☆

Nicole Lyons

I found this product because I was so sick of cleaning tile grout. I wanted the Tadelakt look without spending $$$. The process takes time but the result was worth it. Only use the plastic trowel — a metal one leaves black marks. The Smartcret team was very helpful. I love my new shower and get so many compliments on it!

★ ★ ★ ★ ★

Smadar Levi

I had an amazing experience with Smartcret, absolutely amazing for beginners like me. I changed the floor in a beautiful small cabin and the change was incredible. The service was wonderful. Highly recommend!

★ ★ ★ ★ ★

Tarek Hijazi

We are so happy with Smartcret and the finish! It has given our bathroom a luxurious feel. We have already recommended it to 5 people. Thank you!

★ ★ ★ ★ ★

Elan Argil

Great renovation option if you don't want to demo the tile — it sticks to anything. The company is responsive with great customer service.

★ ★ ★ ★ ★

Neil Henderson

First time user of this product. It's so easy to use and looks really good. Lots of colours to choose from. Great customer service as well.

★ ★ ★ ★ ★

Jade Savage

I live in the US and ordered from Smartcret. My order arrived within a couple of weeks and the customer service is out of this world! I had an item arrive damaged and they were fast to ship a replacement. Great communication. I'll be doing our shower soon!

★ ★ ★ ★ ★

Franny Zywicki

We used it in our Hostal for all the bathrooms and floors. We absolutely loved the product — so much quicker as a ready mixed product. Really helpful team. The only tip: use a stronger varnish on your wettest areas.

★ ★ ★ ★ ☆

24 m² microcement kit for tiled bathroom walls