Dupré Minerals

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Frequently Asked Questions

How much vermiculite do I need?

Bags of Dupré Vermiculite are 0.1m3 in volume. The simple rule of thumb is that 1 bag of Dupré vermiculite will cover 1 square metre to an approximate depth of 10cm. Bulk Bags of 1.2m3 and 2.2m3 are also available. Other packaging may be available on request.

How Heavy is Vermiculite?

Loose Bulk Density of Vermiculite depends upon the grade of vermiculite. See Grades of Vermiculite.

Does Vermiculite Contain Asbestos?

No. The Vermiculite that we use in our products and the Micalite Boards is checked by an independent laboratory for the presence of Asbestos. Asbestos has never been detected in our product. Vermiculite is sometimes associated with Asbestos because of an incident that took place in Montana, USA. The asbestos found in the material from Montana was not due to the vermiculite but to the presence of another mineral called diopside.

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What is the mixing ratio to mix Vermiculite with Cement?

See Lightweight Concrete.

What is the 'U-Value' of Vermiculite?

See Insulation.

What sizes are the Grades of Vermiculite?

See Grades of Vermiculite.


The above product information is given in good faith as accurate and reliable but is not to be taken as a guarantee. The figures provided are intended to be a guide to expected average values and should not be interpreted as a specification. Any potential applications referred to are not to be construed as recommendations. It is the responsibility of the user to determine suitability for any specific purpose.