Versatile & Safe

Inert properties allowing usage across a wide range of global sectors

What is vermiculite?

Vermiculite is the geological name given to a group of hydrated laminar minerals which are aluminium-iron-magnesium silicates

What can it be used for?

Exfoliated vermiculite is used in the friction brake linings market, high temperature insulation, loft insulation, various construction products, animal feeds, horticulture and many other industrial applications.

What grades are available?

Exfoliated vermiculite grade size can be measured between 0.1mm upto 4mm, depending of which grade you choose.

Click here for availible grades Click here for Premium Grades

Vermiculite Solutions

Properties that make it perfect for industry

100% Safe

Vemiculite is a safe, inert material and therefore ideal to use as a replacement for older materials that possess a threat to health and the environment.

Heat Resistant

Vermiculite can be treated in a variety of manners to make it suitable for a wide variety of applications where fire resistance and thermal stability are essential.


When exfoliated, the mineral expands up to ten times its original volume, resulting in lightweight granules that possess excellent insulation properties.

Loose Fill

Available in a range grades, our loose fill Micafil product can be used for packaging, insulation and in the smaller grades, utilised for forms of fire protection.

Vermiculite Boards

Ideal for wood burning stoves, Micalite™ boards are available in pre-cut shapes with decorative surfaces including Brick effect, Herringbone and Reeded patterns.

Other Applications

The versatility of Vermiculite allows for usage in other areas such as friction products, horticulture and animal feeds.

Crude vermiculite ore is mined in many countries across the globe including South Africa, China and brazil.

It is then classified into grades and shipped to Dupré where rock and other impurities are removed.

The ore granules are then exfoliated using a high temperature furnace before being processed further towards the intended application


Download Vermiculite Data Sheet (82 KB)

Download Vermiculite MSDS (80 KB)

Crude Vermiculite Datasheet (270 KB)


Standard Grades

  Micafil Medium Grade Fine Grade Superfine Grade Micron Grade
Nominal Size (mm): 2 – 15 1 – 8 0.5 – 3.0 0.25 – 1.7 0.1 – 1.0
Typical Bulk Density (kg/m3): 85 100 100 105 120








Animal Feed


Animal Feed



Premium Grades

pK Fine Grade pK Large Grade MEV Vermiculite

Dust-suppressed fine grade vermiculite for insulating ceramic shells.

Dust-suppressed large grade vermiculite for packaging.

Micronised vermiculite for specialist applications. Average particle size ~20 microns.