ROCKWOOL ROCKBOARD® 40 is a premium, multi-purpose stone wool insulation board used in walls, ceilings and floors for acoustic and thermal applications.

ROCKBOARD® 40 is non-combustible and fire resistant, and will not produce toxic smoke or promote flame spread, even when exposed directly to a fire. This can add an extra degree of fire resistance and contribute to occupant protection.

ROCKBOARD® products also maintain dimensional integrity under all conditions and, as a result, will not slump, shrink or expand with temperature.

ROCKBOARD® products can be surfaced with different facings to achieve optimal performance results. From mechanical rooms to sound studios to utility rooms, these products add a high-performance barrier to noise and fire.

Properties

• Fire-resistant, non-combustible product with a melting point of approximately 2150°F (1177°C)
• Water and moisture resistant, repels water
• Does not rot or promote the growth of mildew, fungi or bacteria
• Unique directional fiber structure provides excellent sound control
• Provides superior compressive strength for job site durability
• Easy to install, cut, shape and fabricate
• Fabrication at different densities maintains fire-resistant, water-resistant/-repellent and thermal properties
• Available faced with reinforced foil