The type of raw materials used include:
Stonewool – The most popular coming from Rockwool (Rockfon), which has a characteristic green colour to it. The benefit of stonewool are vast:
- Class A1 Reaction to Fire – Completely non-combustible
- High sound absorption
- 100% humidity resistant
Glass wool – The most popular manufacturer of glass wool is Ecophon, part of the Saint Gobain group. Ecophon products are characterised by a distinct yellow backing. The products have similar benefits to the stonewool products.
These products typically have a white face to ensure a clean look when installed in the ceiling. The tiles tend to be ever so slightly textured, which helps with the acoustics.