Different Types of Floor Screeding Systems

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Bonded screed

Bonded Screed

With bonded screed, the screed layer is fully bonded to the substrate using a bonding agent or a primer. It is most commonly used in areas that will experience heavy loading. 25mm-40mm – can go up to 200mm.

Unbonded screed

Unbonded Screed

Unbonded screed is when the screed layer is not bonded to the base, but instead it is applied to a Damp-Proof Membrane (DPM) or polythene, separating the screed from the concrete. 50mm-70mm – can go up to 200mm.

Floating screed

Floating Screed (With Insulation)

Floating is screed is most commonly used in residential properties as the screed is applied on top of a layer of thermal/acoustic insulation. The insulation is usually applied on to the DPM. Minimum thickness 75mm and 65mm is acceptable for domestic housing.

Floating screed

Floating Screed (With Underfloor Heating)

Another common type of floating screed is floating screed with underfloor heating, where the screed is applied above a layer of underfloor heating.