A wall panel builder buys insulation. An automotive interior engineer buys silence. Both are buying the same physics: trapped air in a fibre matrix. High loft nonwoven media does both jobs at once — and the ratio between them is tunable.
Why loft insulates
Thermal resistance in a nonwoven comes from immobilised air. The loft’s fibre network divides the thickness into millions of tiny cells too small for convection, so heat has to conduct through air — which it does poorly. More thickness and finer structure raise R-value; density raised too far starts conducting through fibre instead and gives it back.
Why the same loft absorbs sound
Sound is air movement. When a pressure wave drives air through the fibre matrix, viscous friction converts acoustic energy to heat. The noise reduction coefficient (NRC) depends on thickness, density and fibre fineness — the same three variables that set R-value, weighted differently.
What tuning means in practice
Because both properties hang off the same structure, we tune them together. Tell us the R-value the assembly needs and the octave bands the cabin or room actually suffers in, and we layer the media — coarser carrying layers for body, finer layers for absorption — until both numbers sit where the application needs them. Fire performance is built to stated standards, and rolls are cut to your format.
[Draft — add specific R-value and NRC ranges once published figures are approved.]