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Floor Screeders Required

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With the variety of screeding options now available and with all the complicated industry jargon involved, it is only natural if you get a little lost when trying to choose the right screed for your project. In an effort to explain the different screed constructions in a simplified form, we have created diagrams of the different types of screeds in sectional format for you. We hope you will find this information helpful in choosing the right specification for your screeding project.

Screed construction is generally of 4 types:

  • Bonded Screed
  • Unbonded Screed
  • Floating Screed
  • Screed over underfloor heating

Bonded Screed

 

This is the type of screed where the screed layer is bonded fully to the substrate using a primer or bonding agent. This type of screed is ideal for thinner section screeds where heavy loading is expected.

Unbonded Screed

 

As the name suggests, unbonded screeds are not bonded directly to the base, but applied to polythene/ Damp Proof Membrane (DPM) laid on top of the concrete base. This is ideal for thickness greater than 50mm for standard screed and 40mm for modified screeds such as FlexiDry.

Floating Screed

For this type of screed, the screed layer is laid on top of insulation to create thermal insulated flooring. This is mostly used in the flooring with underfloor heating systems and residential properties.

Screed Over Underfloor Heating

This is the screed construction where the screed layer is installed over underfloor heating pipes, on top of insulated tackerboard or insulation with separating layers.

For a comparative study of the different screed structures, please click the image bellow for a PDF download:

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