Liquid Floor Screed Thickness

The floor screed thickness when floating should be 75mm minimum with no maximum for traditional sand and cement and 35mm minimum with no maximum for modified sand and cement.

Liquid floor screed thickness.

Minimum thickness for truflow pumped screed minimum thickness mm floor type bonded 25 unbonded 30 floating 40 over conduits and heating pipes 25 for all floor types abrupt changes in screed thickness should always be avoided as these may lead to the formation of cracks. In this situation the liquid screed minimum thickness of 30mm is needed for covering the heating pipes or cables. At those kind of depths you would using void formers insulation and then screed on top. An anhydrite floating floor screed has a minimum of 35mm and maximum of 80mm.

Floating liquid screed thickness minimum with underfloor heating pipes would be 20mm for the specialist version and 30mm for the standard coverage above the pipes. This traditional screed mix is made up from sand and cement at a 1 3 5 ratio and is then spread onto the floor and allowed to solidify around the ufh pipes or cables. There is one other variable which needs to be considered in liquid screed thickness and that is if the floor area is to have underfloor heating as part of the structure. Modified sand and cement screeds can go up to whatever thickness you would like however you would question doing so if you are starting to get up to 150mm 200mm.

If you need any further information we would be happy to answer any questions you may have. Nowadays most installers will use fibres to add strength and reinforcement to the flooring and will aim for a thickness around 75mm. Liquid screed thickness with underfloor heating. Minimum thickness for truflow pumped screed over insulation.