Before you buy

Check if this kit is right for your bathroom

This solution is designed to renovate building substrates (cement, concrete, plaster or drywall). Check these four points before choosing size and colour.

Compatible surface

Building substrates: cement, concrete, plaster or drywall. This is not the right kit for tiled surfaces with joints.

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 15 days from receipt for exchanges and returns. Return shipping is at the customer’s expense and you will need the invoice to process it. 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 4 m² microcement kit for absorbent bathroom walls

A more modern bathroom starts here. This box contains the perfect kit to apply microcement to your absorbent bathroom walls (up to 4 m²) and achieve a continuous, timeless and water-resistant finish in record time:

1 Smart Primer ABS (0.5 L): water-based acrylic primer. Its main function is to improve adhesion between the surface and the microcement, while evening out absorption across the area.
1 Smart Base (8 Kg): ready-to-use preparation microcement. A coloured product with coarser grain applied at the base to provide consistency. It does not offer the final finish.
1 Smart Liso (3 Kg): ready-to-use finishing microcement. Coloured and finer-grained than Smart Base, it delivers the smooth, uniform aesthetic that defines microcement.
1 Smart Varnish (1 L): water-based polyurethane sealer, ready to use. It protects microcement from external agents like abrasion and moisture, while enhancing its colour. Available in matte and satin finishes.
1 Smart Booster (50 g): a B-component additive for the varnish that boosts protection against chemicals, adds hardness and increases abrasion resistance.
Sanding discs for prepping each layer. Includes: 3 discs of grit 40, 5 of grit 220 and 3 of grit 400.

📌 Smartcret also offers a dedicated tool kit for microcement application (not included in this box), with essentials such as rollers, trays, masking tape and a polycarbonate trowel.

Application

How to apply the 4 m² microcement kit for absorbent bathroom walls

There’s something special about your absorbent bathroom walls: they’re a blank canvas to create from scratch. And this ready-to-use microcement kit is made for you—someone who wants to shape their ideas without renovations or previous experience. Ready to roll up your sleeves and get down to no-reno business?

1. Clean up and assess

Remove dust and make sure your cement, concrete or plasterboard walls are dry and solid. That’s your starting point to turn rough into remarkable. If there are dents or imperfections, repair them before applying microcement.

2. Prime and conquer

Apply an even coat of Smart Primer ABS. This primer is the perfect ally for absorbent surfaces like the ones in your bathroom. Let it dry for 30 minutes and get ready for change.

3. Bring in the base

Time for muscle: two coats of Smart Base. Apply the first with the Smart Roller, then smooth it with a trowel held at 45°. Wait 6 hours between coats and sand gently with grit 40. Now your design is taking shape.

4. The signature finish

Now for the good part: two coats of Smart Liso for that seamless, elegant and durable finish. Sand between coats (grit 220) and get ready to be amazed. Texture you’ll want to touch.

5. Protection that lasts

Your creation deserves to stay flawless. Mix Smart Booster with Smart Varnish and apply 3 coats. Choose a matte or satin finish and let the varnish work its magic. Wait 4 hours between coats and sand with grit 400 after the first two.

🧠 Smart Tips for trendsetters:

✔️ Hold your trowel at a 45º angle. The wrong angle can affect the texture and final look.
✔️ Less is more: always apply thin coats. Too much product leads to lumps and flaws.
✔️ Tool choice matters. Our polycarbonate trowel (not included in this kit) prevents burn marks and unsightly lines. A different trowel may ruin the finish.
✔️ Sand by hand with care. The sanding discs in this kit are made for manual use. Power sanders can burn the microcement and ruin the surface.

I want bathroom walls with designer vibes

Technical data sheets

Technical data sheets of the microcement kit for absorbent bathroom walls for 4 m²

Renovating with microcement isn't just about style — it's also about knowing exactly what you're using. This 4 m² microcement kit for absorbent bathroom walls includes products specially formulated to keep up with the real-life demands of a bathroom: humidity, water, cleaning… and compliments.

Here you’ll find the technical data sheets for each component, so you know exactly what you're working with. Because a bathroom built from scratch deserves materials that live up to your vision:

Specification sheet Smart Primer ABS

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.

★ ★ ★ ★ ☆

4 m² Microcement kit for plasterboard or plaster bathroom walls

4 m² Microcement kit for plasterboard or plaster bathroom walls