Meet Owens Corning R24 Thermafiber Fire & Sound Guard Plus — a mineral wool insulation built for serious home and light commercial projects. It delivers strong thermal performance, excellent sound control, and reliable fire resistance, so you don’t have to choose between comfort and safety.

If you require delivery to ID, MT, OR or WA, please select that delivery zone as pricing and delivery to those states may vary.

Key Features & Design

• Material: Thermafiber® Fire & Sound Guard® Plus mineral wool insulation designed for high performance in residential and light commercial construction.
• Performance: Non-combustible, moisture-resistant, non-corrosive, non-deteriorating, and mold-resistant — built to last in varied environments.
• Applications: Suitable for interior and exterior wall applications, ceilings, basement walls, and crawl spaces.
• Thermal & Acoustic Benefits: Energy-saving thermal insulation with exceptional sound and noise absorption.
• Fire Resistance: Fire-resistant formulation adds an important layer of protection for occupants and property.
• Installation: Easy to install with simple steps: Measure & Cut, Squeeze & Insert, Release & Expand — designed for a snug, custom fit.

Size & Packaging

• 6" x 16" x 48" — 21.30 sq ft per bag; 4 batt per bag.
• 6" x 24" x 48" — 32 sq ft per bag; 4 batt per bag.

Product Applications

• Ceilings
• Floors
• Interior Acoustics > Ceilings
• Interior Acoustics > Floors
• Interior Acoustics > Interior Walls
• Walls