ROCKWOOL CURTAINROCK® 40

ROCKWOOL Curtainrock® 40 is a semi-rigid stone wool insulation board that will not expand or contract over time due to temperature variances in the curtain wall system, ensuring stable thermal performance over the lifetime of the insulation.

Curtainrock® 40 is non-combustible, fire resistant, and will not develop smoke or promote flame spread when exposed to fire, providing a critical line of defense in fire protection. Available with or without reinforced foil facing (RFF) in a variety of specifications, this product delivers superior sound attenuation characteristics. The unique multi-directional fiber structure and high density of the product reduce noise transmission into and out of the building.

  • Exterior Wall Insulation: Curtain Walls
  • Non-combustible and fire resistant, Curtainrock® 40 works to contain a fire and prevent its spread
  • Dimensionally stable, stone wool does not expand or contract due to temperature variances.
  • Durable inorganic material that does not rot or promote the growth of mildew, fungi or bacteria
  • Approved for use as a component of UL and ULC approved perimeter fire containment systems.

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