Resistance
Non-combustible to 750 °C, dimensionally stable, and resistant to ageing, water vapour, and fungi.
Mineral insulation · CAN/ULC-S702.1 · CCMC 15005-C
Engineered from Volcanic rock. Built to outlast.
ISOROCK rock wool board is a premium-grade basalt insulation built for North American construction. Non-combustible, dimensionally stable, and certified Type 1 thermal insulation — a durable barrier that performs for the lifetime of the building.
Why ISOROCK
Four principles, engineered into every board.
Resistance, technology, accessibility, mineral. The brand is built on the same attributes the product delivers — a basalt-based insulation that is simple to install, hard to compromise, and made at industrial scale.
Technology
Latest-generation, fully automatic production lines transform basalt fibres into a calibrated mineral barrier.
Accessibility
Lightweight, easy to handle, and competitively priced — designed for contractors and big-box retail alike.
Mineral
Made from basalt — an abundant volcanic rock, asbestos-free, and benign for occupants and the environment.
Performance at a glance
Tested. Documented. Specified.
Independently tested at QAI Laboratories' IAS-accredited facility in Tulsa, Oklahoma. Compliant with CAN/ULC-S702.1 Type 1 thermal insulation across densities 60–128 kg/m³, with zero flame spread and zero smoke developed.
S702.1
CAN/ULC Type 1 thermal insulation
FSI · 0
Flame Spread Index — ASTM E84
SDI · 0
Smoke Developed Index — ASTM E84
E136
Non-combustible at 750 °C
Applications
Wherever the assembly demands more.
From over-decks to sandwich panels to drywall partitions, ISOROCK rock wool board is specified where compressive strength, fire resistance, and acoustic performance all need to land in the same product.
Walls & partitions
Framed external walls, internal partitions, and separating walls between dwellings.
Roofs & over-decks
Pitched roofs and over-deck assemblies where high compressive strength is required.
Floors
Separating floors and timber-suspended ground floors with acoustic isolation.
Sandwich panels
Insulated wall and roof panel cores for industrial and commercial envelopes.
Drywall systems
Cavity infill behind gypsum partitions for fire and sound separation.
Custom assemblies
Custom thicknesses, sizes, and facings — FSK, foil, wire mesh, or steel wire.