Curtainboard™ 80 is a higher-density semi-rigid mineral wool insulation board built for the most demanding curtain wall systems.
Strengthen your building envelope with PowerWool™ Curtainboard™ 80, a higher-density semi-rigid mineral wool insulation board engineered for maximum durability, fire protection, and long-term thermal performance.
Designed for demanding curtain wall systems, Curtainboard™ 80 delivers the highest density in the Curtainboard line — 8 lbs/ft³, twice that of Curtainboard 40 — for assemblies facing higher loads or more exposed conditions. Available in thicknesses from 1″ to 8″, it holds its shape and performance where lighter boards may fall short.
PowerWool™ Curtainboard™ 80 helps create safer, quieter, and more resilient buildings by resisting fire, repelling moisture, and maintaining stable R-4.2-per-inch thermal performance over time. It’s approved for use in Canada and the U.S., and suitable for substitution in rated NFPA 285 and ASTM E119 wall assemblies.
| CHARACTERISTIC | RESULT | TEST STANDARD | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Compliance | Mineral Fiber Block and Board Thermal Insulation – Compliant Mineral Fiber Thermal Insulation for Buildings – Compliant | ASTM C612 CAN/ULC S702.1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Reaction to Fire | Flame spread index = 0; Smoke developed index = 0 Flame spread index = 0; Smoke developed index = 0 Determination of Non Combustability of Building Materials – Non Combustible Behaviour of materials at 750°C – Non Combustible | ASTM E84 (UL 723) CAN/ULC S102 CAN/ULC S114 ASTM E136 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Density | 8 lbs/ft³ (128 kg/m³) – Nominal | ASTM C303 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Dimensional Stability | Linear Shrinkage = Pass @1200°F (650°C) | ASTM C356 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Corrosion Resistance | Corrosion of Steel – Passed | ASTM C665 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Thermal Resistance | R-Value / inch @ 75°F — 4.2 hr.ft².F/Btu RSI value / 25.4 mm @ 24°C — 0.74 m²K/W | ASTM C518 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Reaction to Moisture | Moisture Sorption – Pass Water Vapor Transmission, Desiccant Method – 1670ng/Pa.s.m² (29 perm) Determination of Fungi Resistance – Passed | ASTM C1104 ASTM E96 ASTM C1338 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Dimensions | 1″ (25.4 mm) to 8″ (203.2 mm) in ½″ increments 16″ × 48″ (406 mm × 1219 mm) 24″ × 48″ (610 mm × 1219 mm) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Acoustic Performance |
| ASTM C423-23 ASTM E795-23 |
PowerWool™ CurtainBoard™ is engineered for commercial and high-rise construction, including:
Sizes Available: All boards are 24″x48″ in size ranging in thickness from 1″ to 8″ thick
Non-combustible mineral wool insulation, rated zero flame spread and zero smoke developed, for maximum safety in demanding environments.
