Cavityrock®
ROCKWOOL Cavityrock® is a stone wool insulation board designed for exterior cavity wall and rainscreen applications. It is compatible with numerous cladding attachment systems, including z-girts, clip-and-rail systems and masonry ties.
1/3
Popular applications
- Exterior wall insulation
- Cavity wall insulation
- Rainscreen insulation
- Roof insulation
- Metal roof insulation
About Cavityrock®
ROCKWOOL Cavityrock® is a stone wool insulation board designed for continuous insulation in exterior cavity wall and rainscreen applications. Cavityrock is a durable, noncombustible solution that is approved for use in many NFPA 285-compliant designs.
Cavityrock offers reliable thermal performance, improved acoustic comfort, and moisture resistance to maintain long term performance. Also available in a black mat finish, Cavityrock Black reducing installation time in open-joint cladding systems.
- Noncombustible and fire resistant
- Component of NFPA 285 assemblies
- Water and moisture repellent
- Made from natural and recycled materials
- Inorganic, does not promote mold growth
- Dimensionally stable to maintain performance
Why use stone wool insulation
- Noncombustible and fire resistant, stone wool works to contain a fire and prevent its spread.
- Water resistant and vapor permeable for effective drainage from an exterior wall assembly.
- Durable inorganic material that does not rot or promote the growth of mildew, fungi or bacteria
- Cavityrock Black is available with a black mat finish for improved open-joint cladding system aesthetics.
Applications
- Designed as exterior continuous insulation for above-grade wall applications.
- Ideal for exterior cavity walls, rainscreens, and open-joint cladding systems.
- Suitable for commercial and industrial buildings.
- Fits seamlessly with pre-engineered cladding attachment systems like clip and rails, continuous girts, and masonry ties.
Product certificates
Declare

Cavityrock black features and benefits
Cavityrock Black maintains the same noncombustible properties as unfaced Cavityrock, and as a result can satisfy existing NFPA 285 listings
Attend a ROCKonnect Masterclass
Earn CEUs and gain expert insights into high-performance building envelope design—all in a live virtual format built for commercial building professionals. Learn from award-winning experts and apply real-world solutions to your next project.





