Self-leveling underlayments

These polymers are thermoplastic materials usually supplied as redispersible powders. They are widely used in proprietary prepackaged products such as tile grouts, self-leveling underlay and patching materials. 

Fig. 7.24 Self-leveling underlayment placed by pumping (courtesy Monica Martyn).

Numerous and diverse products incorporate casein in their formulations. These include dish-washing liquids, cosmetics, lightweight concrete, gypsum wallboards, pesticide sprays, water purifiers, self-levelling underlayments, and so on [12-14]. 

The following paragraphs will describe the most important and most developed application areas for redispersible powders as they are ceramic tile adhesives/ tile grouts, thermal insulation systems (E.I.F.S.), self-leveling underlayments, patch and repair mortars, as well as water proof membranes (sealant slurries). 

Self-levelling compound, self-levelling mortar Highly flowable concrete/ mortar made by adding admixtures such as superplasticisers and accelerators to purposely optimised mortar or concrete formulations typically used to make flat and smooth surfaces such as underlayment or toppings of floors. 

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