Floor levelling compounds

Level floors and prepare a smooth, even substrate with Hammerfast floor levelling compounds. Explore professional solutions for different substrates, layer thicknesses and project requirements.

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Hammerfast SL-110 (20kg)

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SL-110 FIBER is a high-quality, gypsum-based leveling compound that is fiber-reinforced as...

Hammerfast SL-110 FIBER (20kg)

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SL-110 FIBER is a high-quality, gypsum-based leveling compound that is fiber-reinforced as...

Hammerfast SL-210 (25kg)

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The SL-210 cement-based leveling compound is a game-changer in the flooring industry...

Hammerfast SL-270 (25kg)

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The SL-270 is the most powerful leveling compound in its class, with...

Hammerfast SL-270 Rapid (25kg)

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SL-270 Rapid combines the strength of SL-270 with a fast-drying formula, making...

Hammerfast SL-300 (25kg)

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The SL-300 combines exceptional thickness and strength with a flow that's virtually...
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Professional floor levelling compounds for a smooth, reliable base

Hammerfast Floor levelling compounds

Floor levelling compound is a self-levelling smoothing mortar used to create a flat, even floor. It flows across the substrate and cures to form a strong, smooth surface ready for finishes such as tiles, PVC, carpet or resin flooring. Hammerfast levelling compounds combine reliable flow with high compressive strength, helping flooring professionals create a durable base. The range is easy to mix and apply and includes options for different project requirements. Typical applications include levelling concrete, timber and tiled substrates during renovation. Selected products are fibre-reinforced or suitable for underfloor heating. Always check the relevant technical data sheet to confirm the approved substrate, layer thickness and application.

Frequently asked questions

Answers to common questions about this collection.

What is floor levelling compound and what is it used for?
Floor levelling compound is a self-levelling smoothing mortar used to make uneven floors flat and smooth. It flows across the substrate and cures to form a strong, even surface ready for finishes such as tiles, PVC, carpet or resin flooring.
How thick can floor levelling compound be applied?
The permitted layer thickness depends on the product. Many standard levelling compounds are applied in layers of approximately 1 to 10 mm, while selected fibre-reinforced or deep-fill products allow a different range. Always check the technical data sheet for the chosen product before application.
How long does floor levelling compound need to dry before it can be walked on or covered?
Drying and covering times depend on the product, layer thickness, temperature and humidity. A standard levelling compound may be walkable after several hours, but being walkable does not automatically mean it is ready to be covered. Follow the product-specific technical data sheet before installing the final floor finish.
Can floor levelling compound be used with underfloor heating?
Yes, selected levelling compounds can be used in combination with underfloor heating. Choose a product approved for the substrate and heating system, prepare the floor correctly and follow the commissioning and drying instructions in the technical data sheet.
How do you mix and apply floor levelling compound correctly?
Measure the clean water exactly as specified in the technical data sheet. Add the powder gradually and mix mechanically until the compound is smooth and free from lumps. Apply it within the stated working time, spread it to the permitted layer thickness and remove trapped air where required. Follow the instructions for the specific Hammerfast product.
Can you level a timber or tiled floor with levelling compound?
Yes, provided the substrate is stable and the complete system is suitable. A timber floor must be dry, firmly fixed and sufficiently rigid; a fibre-reinforced product may be appropriate. Existing tiles must be secure, thoroughly cleaned and treated with a primer for smooth, non-absorbent substrates, such as Hammerfast Astar F. Request technical advice if the build-up is uncertain.