Which self-levelling compound is suitable for your project?

Self‑levelling compounds are essential for preparing uneven subfloors and creating a smooth, consistent surface for your final floor covering, whether you’re fitting tiles, vinyl, carpet, laminate, or timber. These ready‑mixed, cement‑based powders flow out to fill dips, undulations and minor irregularities, enabling a professional finish with fewer levelling hassles. Below is a simple guide to choosing the right one for your project.

1. Standard internal levelling (shallow dips, up to 10 mm)

For minor unevenness on rigid internal floors, the Sikafloor 122 Level Universal compound is ideal. It provides easy application and excellent flow for general levelling, making it suitable under carpet, vinyl, laminate, timber, or tile finishes. If you need a faster option, Sikafloor 132 Level Rapid is perfect for projects with tight schedules, as it dries quickly and allows floor coverings to be installed the same day.

2. Flexible or slightly moving substrates

Where slight movement or flexibility is expected, such as sand/cement screeds, quarry tiles, or terrazzo, Sikafloor 125 Level Flex offers enhanced durability and low shrinkage. Its latex‑modified formula makes it more resilient and able to accommodate minor substrate movement, which helps prevent cracking and ensures a stable base.

3. Deep levelling and heavy-duty floors (up to 60 mm)

For significant dips or thicker applications, Sikafloor 360 Level Fibre is fibre‑reinforced for higher tensile strength and crack resistance. It can be used under heavy floor coverings or where embedding underfloor heating cables is required. For very high-traffic or more demanding environments, Sikafloor 131 Level Latex Ultra provides a robust, high-performance levelling solution.

• Minor unevenness / standard flooring: Sikafloor 122 Level Universal 
• Quick turnaround projects: Sikafloor 132 Level Rapid 
• Slightly flexible or moving floors: Sikafloor 125 Level Flex 
• Deep levelling / heavy-duty floors: Sikafloor 360 Level Fibre or 131 Level Latex Ultra 

Always ensure the substrate is primed correctly, mix the compound according to manufacturer instructions and, for larger areas, use a spiked roller to remove trapped air. Follow recommended dry and overlay times to avoid premature loading.

Selecting the right self‑levelling compound depends on the floor type, depth of levelling required and project timeline. From quick, shallow levelling jobs to deep or heavy-duty applications, our range has a solution to ensure a flat, professional finish every time.

Sika StixAll Crystal Clear

StixAll Crystal Clear combines the performance of a grab adhesive with the flexibility of a sealant. It is particularly useful for:

• Fixings where both bonding and sealing are required
• Mixed materials and joints subject to slight movement
• External trims and damp environments

Key benefits include:

• High-strength adhesion to a wide range of surfaces
• Clear, flexible and waterproof finish
• Can be applied in damp conditions
• Reduces the need for separate adhesive and sealant products

Use StixAll Crystal Clear when you need versatility alongside strong, long-lasting adhesion.

• Ensure all surfaces are clean, dry and free from dust or grease before application 
• Allow sufficient curing time before applying weight or stress to the bond 
• Always check product guidance for suitability in extreme conditions or specialist applications 

Choosing the right grab adhesive depends on the materials being fixed, the environment and the desired finish. With the right product from the Solseal range, you can achieve secure, professional results across a wide range of fixing tasks.