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 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 included in the 8 m² microcement kit for tiled showers?

Everything you need to renovate your shower yourself and forget about joints for a very long time. This microcement kit is designed to be applied over surfaces like mosaic tile, marble, ceramic tiles or stoneware—whether on the walls or directly on the shower tray.

The result? A refreshed bathroom turned into your personal oasis of calm and relaxation. A continuous, durable and seriously good-looking finish. And easy to clean! Just water and a neutral pH soap will do.

What’s inside:

1 × Smart Jointer (1.5 Kg): ready-to-use filler to cover joints between tiles and mosaic, leaving a smooth, even surface.
1 × Smart Primer PLUS (1 L): primer that ensures perfect adhesion of the microcement on non-absorbent surfaces.
1 × Smart Base (16 Kg): pigmented base microcement that builds up and strengthens the surface.
1 × Smart Liso (6 Kg): ready-to-use finishing microcement—smooth, seamless and water-resistant.
1 × Smart Varnish (2L): water-based sealer that protects the surface. Available in matte or satin finish.
1 × Smart Booster (100 g): additive that boosts the varnish’s resistance. The upgrade every shower needs.
6 × Grit 40 sanding sheets, 10 × Grit 220 sheets, and 6 × Grit 400 sheets: for smoothing between layers and getting that pro-grade, even finish.

📌 Important notes:

This kit doesn’t include tools, but you can add our specific accessory kit for a top-notch result (with Smart Roller, anti-burn trowel, etc).
The included sandpaper is for manual sanding. If using a power sander, be extra gentle—too much pressure can burn the surface.
Microcement is water-resistant, but not to standing water. If you're coating the shower tray, make sure the slope toward the drain is correct (about 10% incline).

Application

How to apply the 8 m² microcement kit on your old tiled shower

You're just a few steps away from saying goodbye to those outdated mosaic tiles or ceramic joints for good. Whether they’re on the walls or the shower tray, very soon you'll be stepping into a bathroom that feels like a spa. Here’s how to go from “I want it” to “I did it!” in 5 easy, smooth and quick steps:

1. Hide the joints with Smart Jointer

Fill all the grout lines between tiles or mosaic until the surface is level. Once dry, sand it down to make sure nothing breaks the smooth finish.

2. Bond with the surface using Smart Primer PLUS

Apply an even coat with a roller and let it dry for 30 minutes. This primer is the invisible link that makes everything work like a charm.

3. Microcement match with Smart Base

Apply 2 thin coats (less than 1 mm) using Smart Roller and smooth it out with the trowel at 45°. Let dry 6 hours between coats and sand with grit 40. This is where the old shower disappears and the microcement magic begins.

4. Fall for Smart Liso

Apply 2 thin coats, each less than 0.5 mm, using the same technique: trowel at 45°, 6 h drying time, and sanding with grit 220 in between. Voilà: a seamless, stylish and water-resistant shower.

5. Total protection with Smart Varnish + Booster

Apply 3 coats of varnish with the additive. Let each coat dry for 4 hours, sanding the first and second layers with grit 400. After 7 days—the time it takes the varnish to fully cure—your brand-new, modern, anti-slip shower is ready- to- use.

🚨 Pro tips:

Always sand by hand, never with a machine.
Keep the trowel at a 45° angle for a smooth finish.
If you're covering the shower tray, make sure the slope toward the drain is correct (around 10%).
Wait 7 days before using your new microcement shower. That’s how long the varnish needs to reach full resistance.

Your DIY adventure starts now

Technical data sheets

Technical data sheets for the 8 m² microcement kit for tiled showers

Do you like showering knowing exactly what you're stepping on and touching? So do we.

Here you'll find all the technical information for every product in this microcement kit for tiled showers: composition, coverage, drying times, usage tips and compatible surfaces.

Because when it comes to renovating a shower—especially one with joints—control is everything. And this kit gives you that, with professional quality and 100% Smartcret confidence.

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.

★ ★ ★ ★ ☆

8 m² microcement kit for tiled showers