Self-levelling compound (SLC) is a cementitious or polymer-modified topping poured over a prepared substrate to create a flat, smooth surface within tolerance. It is required when existing concrete is out of level, when surface irregularities are present, or when a floor covering — tiles, vinyl, timber, or rubber — requires a flatter substrate than the existing slab provides. It is also used to restore level after old adhesive removal or failed coating remediation.

Properly installed SLC achieves ±2–3mm over 3 metres, meeting substrate tolerance requirements for most commercial floor coverings. For higher-precision applications — raised access flooring, large-format porcelain tiles, sports surfaces — tighter tolerances are achievable with appropriate product selection and placement technique.

Most commercial self-levelling compounds are foot-traffic ready within 2–4 hours of pour, depending on product, depth, and ambient conditions. Covering trades — tilers, flooring installers, carpet layers — typically return the following day. Product-specific return times are confirmed during the pre-pour planning stage.

Yes — all substrate must be clean, sound, and correctly primed before SLC is applied. Depending on the substrate condition, preparation involves diamond grinding, shot blasting, or scarifying to achieve the required surface profile and open the substrate for primer penetration. The primer controls absorption and is critical to adhesion and preventing delamination. Floortek prepares, primes, and pours as a complete package.