Self-levelling compounds are designed for thin applications rather than deep floor build-ups. If installed too thickly, the material may not cure evenly and could fail over time.
Why thickness matters
Most levelling products are designed for depths between 2mm and 10mm, although some allow slightly more. When applied beyond this range, the top layer may harden while the lower section remains weak.
Common problems when it’s too thick
Possible consequences include cracking, weak or powdery layers, poor bonding to the base, slower drying times, and reduced durability under heavy use.
Why it happens
Problems often occur when levelling compound is used to correct significant floor height differences. In these situations, screed should usually be used instead.
What to use instead
Traditional screed or liquid screed systems are designed for thicker applications and provide stronger floor build-ups.
Why choose Floor Screeding Essex?
Floor Screeding Essex provides professional screeding services across Essex with reliable installation and practical advice.