Facades and external wall insulations

A range of mineral products to improve the decorative and functional properties of renders and plasters.

Panoramic shot of a patio with wooden floor and a rattan furniture set; Shutterstock ID 755448436

Renders and plasters must serve both decorative and functional purposes. To meet the aesthetic demands of customers, textured renders and plasters require mineral particles with high brightness and various diameters. Omya calcium carbonates and other mineral products are ideal for formulations that meet these specific requirements.

Boost packing and early strength

Our Betocarb calcium carbonate grades are ideal for sustainable mortars and concrete for high performance applications. Betocarb has consistent purity (>95%), giving it high brightness and making it compatible with other additives. Its excellent consistency complies with the highest standards. With a very low carbon footprint, Betocarb reduces the overall footprint of dry mortar. 

brick house with glass patio on a sunny day

Lightweight fillers for dry mortar

Lightweight filler can be produced using a variety of lightweight aggregates made from expanded perlite with the grading particularity of a top cut lower than 1 mm.


Lightweight fillers are hard, rigid, light and insulative which is particularly useful for producing innovative lightweight mortar. 


Our Omyasphere series of lightweight fillers is based on closed cell expanded perlite and delivers enhanced thermal insulation properties among other benefits. 

Young attractive woman read book and drink coffee sitting on balcony in modern loft apartment

Granules for dry mortar

Omya offers 100% recycled calcium carbonate under the Omyacycle product range. We use specifically selected calcium carbonate from reclaimed material and have obtained the Bureau Veritas certification as 100% recycled material. 


Omyacycle can replace mineral fillers currently used in many Paints & Coatings, Adhesives & Sealants, Mortar, and concrete recipes, improving the sustainability and the recycled content of the final product.

engineer hold white plastic on hand polymer petrochemical product as polymer raw material for plastic in polymer chemical industry design and test in polymer science laboratory; Shutterstock ID 2227177255; purchase_order: POL_Website_Masterbatch & Compounds ; job: ; client: ; other:

Technical support

Omya has a highly experienced technical services team which supports customers throughout the process of product development.  With technical laboratories at our headquarters and dedicated regional technical service hubs in different regions, Omya offers laboratory analysis, reformulation support, and implementation assistance to customers worldwide.

Talk to an expert