Framed external walls
Cavity infill in stud assemblies, where non-combustibility and dimensional stability matter as much as R-value.
Applications
Specified where the assembly has to do more than one job at once.
Rock wool board sits in the wall, the roof, the floor, the panel core, and the partition cavity — anywhere thermal performance, fire resistance, acoustic isolation, and mechanical strength all need to be solved by the same product.
Internal partitions
Acoustic and fire-rated separation in offices, multi-family residential, and institutional buildings.
Separating walls between dwellings
STC-grade isolation between units, with a non-combustible core that meets fire-rated assembly requirements.
Pitched roofs
Continuous mineral insulation between or above rafters, suited to vented and unvented assemblies.
Over-deck assemblies
Compressive-strength applications above structural decks, including roof and mezzanine assemblies.
Separating floors
Acoustic isolation and fire separation between floor levels in multi-storey construction.
Timber-suspended ground floors
Thermal insulation between joists, with handling characteristics suited to retrofit work.
Sandwich panel cores
Pre-fabricated wall and roof panels for industrial, commercial, and cold-storage envelopes.
Drywall partitions
Cavity infill behind gypsum, paired with FSK or foil facings where vapour control is required.
Why mineral, not foam
The case for rock wool, briefly.
Rock wool is non-combustible, vapour-open, and dimensionally stable across the temperature range a building actually sees. It does not off-gas, does not feed mould, and does not require an ignition barrier in most assemblies.
Fire
Non-combustible to 750 °C; melting > 1000 °C.
Acoustic
High sound absorption, low corrosion to fasteners and tracks.
Vapour
Sorption < 0.5 %; vapour-open without trapping moisture in the cavity.
Health
Asbestos-free; no objectionable odour; mildew-proof.