FREE SHIPPING FOR ALL ORDERS. ORDER NOW!

Liquid cork sealant Bostik 3070

"Why would I need an expansion joint if the floor looks fine?" – if that's what you're thinking, you're probably just one step away from some costly problems. Skipping expansion joints is like planting a hidden time bomb. Over time, your floor will start to ripple, creak and crack – leading to an expensive and time-consuming replacement. Bostik 3070 liquid cork is designed for floor expansion joints, protecting your floor for years to come.

You probably have a few questions, so we’ve prepared the answers!

WHAT IS BOSTIK 3070 LIQUID CORK?

Bostik 3070 is a ready-to-use sealing compound made from natural cork. It’s cork in liquid form – it easily fills gaps and adapts to different shapes, giving you greater flexibility. Bostik 3070 comes in cartridges.

WHERE IS BOSTIK 3070 LIQUID CORK USED?

Bostik 3070 is mainly used to fill expansion gaps, preventing the floor from cracking or warping due to changes in temperature and humidity. It’s most commonly applied between different types of flooring, such as ceramic tiles, parquet, and laminate – ideal for gaps up to 5 mm wide.

It’s also perfect for hard-to-reach areas: where partition walls meet, around door frames, or around fireplaces – anywhere standard cork sheets or rolls wouldn’t fit.

HOW DO YOU CORK EXPANSION GAP FILLER?

The easiest way is to use a dedicated Bostik 3070 liquid cork applicator gun. It has a durable metal construction, making it easy to apply the cork precisely and smoothly. The gun allows for even and clean application without spills or wasted material.

WHY IS A FLOOR EXPANSION JOINT NECESSARY?

Temperature changes cause floors to constantly move – they expand and contract every day. Without the right support from a flexible expansion joint, you’ll eventually notice issues like bulging or cracking. Bostik 3070 protects your floor from damage by allowing it to move naturally.

Skipping expansion joints is a trap – and you won’t notice the effects straight after installation. But give it a few seasons and problems will start to show: laminate floors begin to ripple, and parquet starts to creak. Repairing the damage is costly and usually means replacing the entire floor. Using Bostik 3070 is an easy way to avoid all that hassle. Applying liquid cork couldn’t be simpler – you use an intuitive application gun: squeeze, smooth it out, and you’re done. It’s the perfect solution if you want to sort out your expansion joints quickly without having to hire a professional.

And then there’s the appearance. Traditional expansion joints often stand out and can look unsightly. With liquid cork, you avoid that problem – once applied, the surface is aesthetic. The natural colour of the cork blends in with the floor and doesn’t draw attention.

What really sets Bostik 3070 apart is its form. It’s not rigid cork – it’s a flexible compound that adapts to the shape and space. Use it where traditional solutions fall short – not just for expansion joints, but also for sealing doors, windows, corners, and other hard-to-reach areas.

One more important thing: cork is a 100% natural, renewable material. Think about the expansion joints you usually find in shops – most of them are synthetic and have nothing to do with nature. Nowadays, you can create expansion joints responsibly, without adding more waste to the planet.