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Rockwool Cavityrock Semi-Rigid Insulation Board - 3" x 24" x 48" (40 sqft/pack)

Original price $181.49 - Original price $181.49
Original price
$181.49 - $181.49
Current price $181.49

PLEASE NOTE THE CURRENT LEAD TIME FOR ROCKWOOL CAVITYROCK IS UP TO SEPTEMBER 2024. Call us at 1-877-383-2671 for more information.

CAVITYROCK® is a semi-rigid insulation board designed for exterior cavity wall and rainscreen applications

ROCKWOOL Cavityrock® semi-rigid stone wool insulation board available in mono and dual density is designed for exterior cavity wall and rainscreen applications.

Compatible with numerous cladding attachment systems, Cavityrock® is a durable solution with non-combustible characteristics meaning that the insulation will not develop toxic smoke or promote flame spread even when directly exposed to fire. Approved for use in many NFPA 285-compliant designs, it is an important component of fire-resilient exterior wall systems when used as a continuous insulation.

  • Cavityrock® also offers energy efficiency with reliable thermal performance, improved acoustic comfort, and is moisture resistant to maintain insulating value for the long-term.
  • Comes in packs of 40 square feet.
  • Please note that pricing shown is for the BC market only. We may have different pricing for Rockwool Cavityrock in other provinces. Please call us at  1-877-383-2671  to confirm.


  • Non-combustible stone wool insulation with melting point of approximately 1177°C (2150°F)
  • Fire-resistant due to its high melting temperature
  • Water and moisture resistant; does not absorb moisture to maintain insulating value
  • Chemically inert
  • Does not rot or promote the growth of mildew, fungi or bacteria
  • CFC- and HCFC- free product and process
  • Made from natural and recycled materials
  • ROCKWOOL® can contribute to earning LEED® points