Welcome to Imerys Performance Additives Division

Renders and plasters

Renders, plasters & grouts Imerys minerals reduce pinholes and cracking in resin-based plasters and paints

Imerys macro-lamellar minerals make ideal multifunctional fillers in resin-based plasters, renders, ETICs and EIFs where they reduce pinholes and prevent cracking. Our reactive pozzolans are good for achieving hydraulic set in mortars and plasters.

Pinholes are generally the result of the capillary effect between the coarser plaster particles and renders, and cracks are due to shrinkage. Coarse macro-lamellar mineral grades prevent this capillary effect, reducing the number of pinholes. Their highly lamellar structure also acts as an anti-cracking agent. We recommend our Extra M100 grade for reducing pinholes and cracking. Our platy talc and talc chlorite products are also ideal for sandable interior plasters.

Our Argical® M range of reactive pozzolans are ideal for achieving a hydraulic set in traditional lime putty mortars and plasters.

Imerys muscovite Mica MU™ grades can improve mixing and trowelling properties in plasters and mortars and improve the flexibility of the finished product.

We offer a full range of bespoke formulation and technical and process support services to help you match the right mineral grade to your application requirement.

Please contact us, we will be only too happy to help

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