Some frequently asked questions about our insulations

Do you have questions regarding our thermal and acoustic insulation?

Please find the most frequent questions we receive listed below to give you a quick response:

Any queries regarding this product?Then contact us using this form or call:Thermische und akustische Isolierungen+49 5231 9607-36We will be happy to advise.


Do you also deliver to private customers?

Yes, we deliver to both commercial and private customers.
Deliveries to private customers are made against prepayment.

What are the minimum purchase quantities?

The minimum purchase quantity is variable, depending on the requested material.
The exact amount is specified in our offers.

How can I order?

You can use our contact form or send your order by email/fax to one of our contact persons.

Where can I find a price list?

We do not keep a price list because our material is not only available in sheets, but also as rolls and can be cut to meet customer requirements.

Is it possible to get a material sample?

Yes, we can send samples in standard sizes on request.

What is the largest dimension available for cutting and shipping?

The processing area on our water jet system is a maximum of 3,000 x 4,000 mm, but the cutting size is limited to the size of the different starting materials.

How big are the tolerances for water jet cutting?

The tolerances depend on the respective material and its properties. It is therefore necessary to coordinate for the particular application.

Where can I find the safety data sheets?

We can send you safety data sheets on request.

What does a cut cost compared to sheet and roll goods?

The costs for cuts depend on the geometry of the article and the number of pieces required.

What is the sound absorption coefficient?

The sound absorption coefficient α is the ratio of absorbed sound energy to incident sound energy. For complete reflection α=0, for complete absorption α=1. Since the sound absorption coefficient depends on frequency, it is measured in third octave bandwidth in the frequency range of 100 to 5000Hz.

What are the differences between polyurethane, polyethylene and melamine based foams?

Polyurethane foam (PU) has an open cell structure and so is used as acoustic foam for sound absorption.

Polyethylene foam (PE), in contrast, has a closed cell structure with good thermal insulation properties. Because of its superior compressive strength, PE foam is often used for impact protection in vehicle interiors.

Melamine is a flexible, open cell foam made from melamine resin with excellent flame resistance and is most commonly used for thermal insulation and sound absorption.

What is the difference between polyether polyurethane and polyester polyurethane acoustic foams?

Polyether polyurethane foam has the characteristics:

  • soft feel
  • flexible
  • fine open cell structure

Polyester polyurethane foam has the characteristics:

  • firm feel
  • rough open cell structure
  • and therefore a somewhat higher degree of absorption than polyether based products

How do you fit the sound insulation materials?

In most cases, the materials are permanently attached to objects with a high-quality self-adhesive based on acrylate.

Depending on the installation situation (e.g. horizontally suspended), the dead load and the ambient conditions, some cases may require additional mechanical fixing of the sound insulation materials.

Powder-coated surfaces with lotus effect may cause adhesion problems. Talk to us if this occurs.

Heavy foils without self-adhesive system have a high dead weight and so are permanently attached using two-component polyurethane adhesive from our range.

Always make sure to read our instructions on processing for use.

Do the glass fibre products pose a health risk?

We only use continuous filament (textile glass fibres) as man-made mineral fibres (MMMF).

The continuous filaments in our thermal insulation materials are produced from suitable raw materials in a process called mechanical drawing. This results in an almost uniform, generally round, cross-section, with a fibre diameter of 5 - 24 µ.

Under both German and EU laws, our continuous filament products are currently exempt from classification in a health risk category.

We cannot rule out that the handling of our thermal insulation materials may cause itching. As a precaution, we would recommend using appropriate protective equipment such as dust masks, goggles, long work gloves and use hand cream when processing and fitting our products. Contact your health and safety officer for further advice!

Any queries regarding this product? Then contact us using this form or call:

+49 5231 9607-36

We will be happy to advise.