A Beginner’s Guide to Applying Kerakoll Biofix: Tips and Tricks

Working with tile adhesives can be challenging, especially if you’re new to the process. Kerakoll Biofix is a mineral adhesive designed for fixing ceramic tiles, vitrified tiles, and stones. Due to its strong bond and long-lasting finish, it is an excellent option for walls and floors.

This guide will walk you through some tips and tricks to help you apply Kerakoll Biofix easily and efficiently.

1. Know Your Surface

Before you start, make sure the surface you’re working on is ready. It’s important to have a clean, stable, and level surface for the adhesive to bond well. If you’re working on cement-based screeds, concrete, or waterproofing products, you’re on the right track.

• For highly absorbent concrete surfaces, dampening the surface or applying Primer A Eco can help improve adhesion.
• Always make sure the surface is dry, free from any dust, oil, or other substances that could weaken the bond.

By starting with a clean surface, you ensure that the adhesive holds properly and the tiles remain secure.

2. Mixing the Adhesive

The next step is preparing the adhesive. Mixing the right amount of water is key to getting the perfect consistency for your project. Here’s how to do it:

• For a 20 kg bag, mix with around 5-6 liters of water.
• For a 30 kg bag, use 7.5–9 liters of water.

It’s good practice to mix until you get a smooth, lump-free consistency. If needed, you can adjust the consistency depending on whether you’re working on walls or floors. A low-speed mixer is recommended to avoid adding air into the mixture, which can affect adhesion.

3. Applying the Adhesive

When the adhesive is prepared, apply it. The goal is to create a strong bond between the tiles and the surface. A notched trowel is the best tool for applying the adhesive. Here are some quick tips:

• Cover the surface with a thin and even layer of glue.
• For large tiles (especially with sides longer than 30 cm), apply a layer of adhesive directly on the back of the tile as well.
• After applying pressure to the tiles, make any necessary adjustments. Kerakoll Biofix offers prolonged workability, giving you more time to make sure everything is aligned perfectly.

For outdoor projects or areas with high traffic, ensure the adhesive completely covers the back of each tile for added strength.

4. Avoid Common Mistakes

When working with Kerakoll Biofix, avoid certain mistakes that can impact the final result:

• Don’t use the adhesive to correct uneven surfaces. If your surface has dips or bumps larger than 15 mm, level it out before applying the adhesive.
• Make sure you respect all expansion joints. For example, in external applications, create joints about every 10 m², and for internal applications, every 25 m².

5. Timing Is Everything

One of the great things about Kerakoll Biofix is its extended workability. After mixing, you have about 5 hours at normal room temperature (23°C) to apply and adjust your tiles. This is especially useful for beginners, as it allows more time to get things just right.

• After about 30 hours, foot traffic is safe, but give it up to 4 days before allowing heavy traffic in the area.
• For walls, you can start grouting after about 20 hours.

Being patient with the drying process ensures that your work remains secure and long-lasting.

6. Suitable Areas for Kerakoll Biofix

Kerakoll Biofix works well in various applications, both indoors and outdoors. Here’s why Kerakoll Biofix works best for both applications:

• Perfect for moist spaces like kitchens and bathrooms.
• Perfect for fixing glass mosaic, vitrified tiles, ceramic tiles, and natural stone.
• Great for both commercial and domestic spaces.

It’s also suitable for use on street furniture and other external installations where durability is important.

Using Kerakoll Biofix makes tile installation easier and more efficient. From mixing the adhesive to applying it and adjusting the tiles, the process is smooth for both beginners and professionals. Always make sure you follow the right preparation steps, mix carefully, and give the adhesive enough time to dry.