Frequently asked questions

In our FAQ you can find answers to the most commonly asked questions about Troldtekt acoustic ceilings

As a general rule, the battens – longitudinal as well as transverse – must be installed per 600 mm, corresponding to the standard width of the Troldtekt panels.

More information about installation


Troldtekt has a maximum span of 600 mm, which translates to the following no. of screws per panel:

Panel size 600 x 600 mm: 4 screws per panel
Panel size 1200 x 600 mm: 6 screws per panel
Panel size 2000 x 600 mm: 10 screws per panel
Panel size 2400 x 600 mm: 10 screws per panel

More information about screws

Yes, all Troldtekt products are tested for reaction to fire in accordance with EN 13501:
- The reaction to fire classification for Troldtekt panels is B-s1,d0.
- The reaction to fire classification for Troldtekt A2 panels is A2-s1,d0.

More information about fire safety


Yes, Troldtekt can be used in wet rooms without problems. We have many years of experience using Troldtekt ceilings in places such as swimming baths, locker rooms, bathrooms and summer houses with swimming pool.

The cement contents in Troldtekt ensure that the wood wool in the panels is not damaged by moisture.

More information about durability

Yes, the cement contents in Troldtekt ensure that the panels are not damaged by moisture.
Therefore, Troldtekt is very suitable for e.g. under eaves and under lean-to roofs.

More information about durability

If you install damp Troldtekt panels, the panels may shrink when they dry, resulting in small shrinkage cracks. It is therefore important to follow the storage instructions carefully.

If you store the panels in a dry place on receipt, our experience is that you do not need to acclimatise them.

If, on the other hand, the panels have been stored at high humidity, it is a good idea to “batten” them by placing battens between the panels and allow them to acclimatise indoors for about 14 days before installation.

Please find the storage instructions here

No, Troldtekt does not shed dust! Troldtekt has obtained indoor climate certification in the best classes in accordance with the Danish Indoor Climate Labelling (Dansk Indeklima Mærkning). In order to obtain the indoor climate certificate, the Troldtekt panels have, among other things, been tested for particle release.

More information about indoor climate

Yes, Troldtekt is one of the few acoustic ceilings available which you can paint using ordinary water-based paint – without reducing the sound-absorbing properties.

If you want to paint an existing ceiling, you can use a long-haired paint roller or a hand sprayer. Please note, however, that the open structure of the Troldtekt panels makes it difficult to achieve the same uniform coverage as the ready painted panels from the factory.

More information about paint

You can make an El 30 construction with min. 25 mm Troldtekt on wood battens and 100 mm mineral wool (60kg/m3) in batts assuming that the mineral wool is secured every 300 mm by either wood battens or annealed wire.

You can also build an El 30 construction with min. 25 mm Troldtekt suspended in steel profiles (C60 system) and 2 x 50 mm mineral wool (60 kg/m3). The bottom layer of mineral wool is are adapted to the main profiles and the installation profiles, while the top layer is adapted to the quick-fit suspension bracket. 

More information + drawings

At Troldtekt A/S, we’re always happy to advise on the use of acoustic solutions, installation systems, ventilation and fire-protection. We also offer to perform acoustic calculations for guidance purposes and share experiences from projects that use Troldtekt acoustic solutions.

However, we are not liable for advice provided to builders, advisors or other parties involved in a construction project – neither in connection with project planning, calculations nor the sale of Troldtekt acoustic solutions.

We therefore recommend that you use a consultant to assess the specific solutions and constructions for a specific building.