drainage holes to allow moisture which penetrated an exterior plaster or stucco coating to drain through the screed.

Liquid and flow screeds

Flowing screeds are made from inert fillers such as sand, with a binder system based on cement or often calcium sulphate. Flow screeds are often preferred to traditional screeds as they are easier and faster to install and provide a similar finish. Flow screed is often used in combination with underfloor heating installation.

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