Frequently Asked
Questions
Want to find out more about Cemfloor? What are the drying times?
What surface preparation is required? When can you walk on screed? The answers to these and more can be found below.
What can we help you with?
Underfloor floor heating can be turned on at a low temperature 7-days after Cemfloor screed has been installed. The heating should be heated up slowly in accordance with our guidance documents.
For moisture sensitive flooring, Cemfloor screed must be dried to a moisture content of 2.5%CM or a relative humidity of 75%.
Unlike other liquid screeds, Cemfloor screed does not require sanding to remove surface laitance. It is however recommended that the surface of the screed be lightly abraded to clean and remove any building residue to ensure that there is a good key to receive subsequent floor coverings. Some types of flooring products such as surface DPM’s, self-smoothing/levelling compounds, resin flooring, microcrete etc. may require the screed surface to be further mechanically prepared to provide a textured surface to enable adequate absorption and increased adhesion between both surfaces. For further information see our Floor Covering Preparation Guidelines document
Cemfloor screed will be suitable for foot traffic after 24 – 48 hours.
The minimum depth of Cemfloor for each screed type is:
Bonded Screed = 20mm
Unbonded Screed = 30mm
Floating Screed: Domestic Application – 35mm
Floating Screed:Commercial Application – 40mm
Floating Screed over underfloor heating – 40mm
Depending on the floor covering being installed and on the manufacturer’s instructions; the surface of Cemfloor screed may need to be primed before the adhesive is applied to avoid the adhesive drying out to fast. Since Cemfloor is a cement based screed there is no risk of any contamination taking place between the screed and the adhesive and therefore no sealers are required.
