ROCKWOOL Cavityrock® is a semi-rigid stone wool insulation board that is available in mono and dual density, 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.

Also available in a black matte finish for open-joint cladding systems, Cavityrock® Black combines your insulation install with masking in a single step, reducing installation time and material cost to achieve your desired design aesthetic.

  • Exterior Wall Insulation: Rainscreens and Cavity Walls
  • Choose mono-density insulation in thicknesses up to 2”
  • Choose Dual-density in thicknesses of 2.5” to 6”
  • Non-combustible and fire-resistant, Cavityrock® works to contain a fire and prevent its spread
  • Water-resistant and allows for effective drainage from an exterior wall assembly
  • Available in black matte finish to provide masking for improved open-joint cladding system aesthetics
  • Compatible with a variety of cladding systems including Z-girts, masonry ties, and fiberglass and stainless steel clips
  • Made of durable inorganic material that does not rot or promote the growth of mildew, fungi or bacteria
  • Rockwool Commercial Building Submittal Package-US

  • Cavityrock® and Comfortbatt® Effective Insulation Solutions – The Future of High-Performance Rainscreen Systems

  • Cavityrock ® Black Features and Benefits

  • ROCKWOOL Cavityrock Attachment Guide

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