Comfortboard
Rigid stone wool board for continuous exterior insulation — high compressive strength, vapor open, and fire resistant.
$104.00
Certain board thicknesses temporarily have extended lead times in certain areas. Your lead time will be confirmed after order, or you may contact us to confirm before ordering.
Lead Time: 5 business days
Shipping: Varies by size — calculated at checkout
What it does
ROCKWOOL Comfortboard 80 is a rigid stone wool insulation board used as continuous insulation on exterior walls, foundations, and under slabs. It minimizes thermal bridging and maintains performance in damp conditions.
When to use it
- Above-grade walls behind cladding (continuous insulation)
- Below-grade foundation walls and basements
- Under concrete slabs
- One- and three-coat insulated stucco assemblies
- Cathedral ceilings and pitched roofs
Key benefits
- Noncombustible (flame spread 0); ASTM C612 Type IVB
- Water and moisture repellent, vapor permeable
- Excellent acoustical performance
- High compressive strength compatible with screw-fastened cladding
- Inorganic; will not promote mold growth
Format
Rigid stone wool boards (8 lb/ft³ density), thicknesses 1" to 5", R-4 to R-21.
Unit
| Length | 4 ft |
| Width | 24 in |
Key Specifications
| Property | Specification |
|---|---|
| Actual SqFt per Truckload | 24,960 sqft, 18,720 sqft, 13,728 sqft, 13,312 sqft |
| Coverage SqFt | 8 sqft |
| Coverage SqFt per Truckload | 24,960 sqft, 18,720 sqft, 13,728 sqft, 13,312 sqft |
| Height | 100, 90 |
| Packs per Pallet | 18, 20, 22, 16 |
| Packs per Truckload | 520, 468, 572, 416 |
| Pallets per Truckload | 26 |
| R-Value | R-12.6, R-6.3, R-8.4, R-10.5 |
| Actual SqFt | 8 sqft |
| SqFt per Pallet | 528, 720, 960, 512 |
| SqFt per Unit | 24, 40, 48, 32 |
| Units | Pack, Pallet, truckload |
| Boards per Pack | 3, 5, 6, 4 |
| Units per Pallet | 120, 66, 90, 64 |
| Units per Truckload | 3,120, 2,340, 1,716, 1,664 |
| Weight | 960, 961, 996, 984 |
Material Health & Certifications
Professional Grade
Built for building professionals
Fast Shipping
Direct from manufacturer
Tech Support
Expert installation guidance
Certified Performance
Tested and documented
