Loose Vermiculite

Inert properties allowing usage across a wide range of global sectors

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Dupre Website 20211

What is Vermiculite?

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

Dupre Website 20212

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. 

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What Grades Are Available?

Exfoliated Vermiculite is available in a selection of grades with nominal sizes from 15 mm to 0.1 mm.

Standard Grades

Dupre product 3


Nominal size: 2 - 15mm
Typical bulk density: 85kg/m3
Applications: Insulation Concrete, Refractories, Packaging

Dupre product 2

Medium Grade

Nominal size: 1 - 8mm
Typical bulk density: 100kg/m3
Applications:Insulation, Horticulture, Refractories

Dupre product 1

Fine Grade

Nominal size: 0.5 - 3.0mm
Typical bulk density: 105kg/m3
Applications:Horticulture, Friction

Dupre product 5

Superfine Grade

Nominal size: 0.25 - 1.7mm
Typical bulk density: 105kg/m3
Applications:Friction, Animal Feed, Screeds

Dupre product 4

Micron Grade

Nominal size: 0.1 - 1.0mm
Typical bulk density: 120kg/m3
Applications:Friction, Animal Feed

Premium Grades

Dupre product 6

pK Fine Grade

Dust-suppressed fine grade vermiculite for insulating ceramic shells.

Dupre product 7

pK Large Grade

Dust-suppressed large grade vermiculite for packaging.

Dupre product 8

MEV Vermiculite

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

Loose Vermiculite Enquiries

For further information on both Standard and Premium Grade loose vermiculite products, please contact us.

Vermiculite Solutions

Properties that make it perfect for industry
100% Safe

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 Resilient

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

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.

Lightweight Concrete

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

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.

Loose Vermiculite Downloads

Click below to download loose vermiculite Technical & Safety Datasheets