Cellulose has an R-value of 3.5 per inch of insulation ... about the same size as fiberglass batt insulation but denser. Mineral wool also repels water so mold can’t grow on these batts.

( MENAFN - GlobeNewsWire - Nasdaq) Major wool insulation market participants include Armacell, BASF, Fletcher Insulation, Greenfiber, Huntsman International LLC, Isover, Johns Manville, Kingspan Group ...

Trapped air between glass or mineral wool fibres reduces heat loss by conduction and convection. Walls 35 Cavity wall insulation fills the cavity between the outside walls with mineral wool ...