Rockwool CurtainRock is a lightweight, semi-rigid stone wool insulation board designed for curtain wall specifications. It’s built for professionals who want reliable fire protection, solid thermal performance, and a little peace of mind—with a touch of practicality, not hype.

Key Features & Design

• Lightweight, semi-rigid stone wool insulation boards designed to meet a variety of curtain wall specifications.
• UL and Intertie approved as a forming material for numerous fire stop systems; ROCKWOOL SAFE paired with CURTAINROCK 40/80 provides perimeter fire containment that’s UL/ULC tested and approved.
• Applications: designed specifically for curtain wall systems suited for backpan or mechanical fastening applications.
• Low moisture sorption rate; effectively drains water away from exterior walls
• Delivers higher R-values for lasting thermal protection
• Non-combustible product with a melting point of approximately 2150°F (1177°C)
• Sound absorbent and chemically inert; non-corrosive
• Repels water, does not rot, or promote the growth of mildew, fungi, or bacteria
• Can be fabricated and faced with reinforced foil facings
• Approved for use as a component of UL-approved systems
• ROCKWOOL can contribute to earning LEED points

Specifications

• Thickness: 2" • 3" • 4" • 5"
• Sq Ft Per Pack: 2" — 80 Sq Ft; 3" — 40 Sq Ft; 4" — 40 Sq Ft; 5" — 24 Sq Ft