Div 07 · Thermal & Moisture Protection
ROCKWOOL Curtainrock 40
R
Rockwool · Curtainrock 40
A 4 pcf stone wool board for the spandrel area of curtain wall construction, giving noncombustible thermal insulation behind the glazing system.
✓ Verified 2026-08-28
Specs on this page were checked against Rockwool Curtainrock 40 technical data sheet on 2026-08-28.
Specifications
| Density | 4.0 lb/ft3 minimum |
| Thickness | 2 in to 6 in |
| R-value | 4.3 per inch at 75F |
Certifications & Standards
ASTM C612
ASTM C303
ASTM C356
ASTM C518
ASTM C1104
ASTM C1338
ASTM E84
ASTM E136
ASTM E2307
UL 723
Attributes — product claims, not third-party certifications
NoncombustibleStone woolCurtain wall spandrel insulation
Sustainability
No sustainability metrics on file for this product.