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Biogas plant

the use of calcium-free Kavarmat ® products prevents the formation of carcinogenic chromium (VI) compounds (chromates)

the safety of people that come into contact with our products is important to us!

The protection of our environment as well.

#Cleansulation by Kavarmat®

calciumfree* and low-calcium* high-temperature insulation from Kavarmat® - the Cleansulation company

heat resistant up to 800 ° C

sustainable and reusable

environmentally friendly and harmless

it doesn't itch

it doesn't dust

everything from one source for a sustainable future

Measurement or
3D construction

With a drawing pad and folding rule on site or design creation through data exchange or 3D-scan 

One-off or series production

Production of individual or recurring insulation elements

Attachment and assembly

worldwide installation services

Take-back and recycling

Disposal of contaminated insulation materials properly and in accordance with regulations

calcium-free and low-calcium insulating materials

why calcium-free or low-calcium insulation?

the calcium oxide contained in many common insulation materials and fabrics can be released during use.

Calcium oxide


Elements of motors, turbines and pipelines to be insulated are made of stainless steel and contain chromium (III) compounds.
Chrom (III)-oxid

Chrome (III)


Calcium oxide and chromium (III) compounds can lead to the formation of calcium chromate under certain thermochemical conditions.
Chrom (VI) Isolierung

Calcium chromate


Click on the picture to zoom in

on our main page you will find all information on the formation of the chromium (VI) compound calcium chromate; when you click on the button, our main page opens in a new window

heat-retaining calciumfree high-temperature insulation

#Cleansulation for engines and turbines

Application examples



  • How dangerous are chromates?
    Chromates (calcium chromate, sodium chromate or potassium chromate are chromium (VI) compounds and classified as carcinogenic (1B) and as a chronic aquatic hazard with long term environmental effects (H410). *** Chromates (calcium chromate, sodium chromate or potassium chromates are chromium (VI) compounds and classified as carcinogenic (1B) and as chronically hazardous to water with long-term effects on the environment (H410).
  • Can chromium (VI) compounds form when using Kavarmat products?
    No! No Calcium - No Calcium Chromate No Sodium - No Sodium Chromate No Potassium - No Potassium Chromate All Kavarmat products are calcium, sodium and potassium free or low in calcium.
  • What do I have to consider when dismantling used insulation materials?
    There are many safety precautions to be taken when hazardous substances are released! The S-T-O-P principle applies Substitution Technical measures Organizational measures Personal protective equipment Used insulating materials that may be contaminated must be disposed of as special waste, with a special label. Eleven(!) different technical guidelines for hazardous substances (TRGS) apply to calcium chromate, which we will be happy to make available to you. The work area must be marked (no entry) and may only be made accessible to trained specialists. Work may only be carried out with personal protective equipment (safety goggles, FFP mask, overalls, gloves, etc.). The following things must be carried out before starting work: written risk assessment List of exposures and much more.
  • Why is there so little information on the release of chromates when using today's insulating materials?
    We would be happy to answer this legitimate but explosive question in a personal meeting.
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