Light, elastic and intrinsically safe. Glass wool is the leading insulator of dry-construction systems: it fills empty cavities, transforming thin walls into formidable barriers against thermal loss and noise.
The production cycle is an example of circular economy. Silica sand and recycled glass cullet (up to 80%) are melted at 1400 degrees C and transformed into microfibres. The most recent technologies have replaced phenolic glues with formaldehyde-free bio-based binders, making modern glass wool safe for indoor air quality.
In a plasterboard partition, sound passes through the first rigid board (the mass) and makes the air in the cavity vibrate. Filling this void with glass wool solves the problem: thanks to its low dynamic stiffness and high open porosity, the material acts as a spring that dissipates acoustic energy as heat (viscous friction).
Standards
European and international references applicable.
Physical properties
Usage environment
Glass wool is the preferred insulation for lightweight drywall systems where weight is critical. It is not recommended for external cladding (ETICS) due to lower density and mechanical strength: rock wool panels are required instead.