Owens Corning Flame Spread 25 Fiberglass Insulation is a preformed flexible blanket design for walls, floors, and roof/ceiling assemblies. It’s available with an FSK (foil-scrim-kraft) or PSK (poly-scrim-kraft) facing, both acting as vapor retarders and delivering a neat finished appearance.

Key Features & Design

• Excellent thermal control — keeps spaces comfortable while helping manage energy costs.
• Effective acoustical performance — a quieter environment without sacrificing performance.
• Long-term performance — will not settle nor slump within wall cavities.
• Less dust than other fiberglass insulation products.
• Excellent recovery characteristics — maintains consistent coverage over time.
• Compression packaging — speeds job site handling and installation.
• FSK and PSK facing — both act as vapor retarders and provide a neat finished appearance.

Specifications

• R-Value: R-19
• Facing: FSK (foil-scrim-kraft) or PSK (poly-scrim-kraft) facing
• Sizes per bag: 6.25 in. x 16 in. x 96 in. — 85.33 sq ft, 5 batts per bag
• Sizes per bag: 6.25 in. x 24 in. x 96 in. — 128 sq ft, 4 batts per bag
• Flame Spread: 25
• Type: Preformed flexible blanket insulation
• Availability: All Sizes (R-values from 11 to 38, at a thickness from 3.5 to 12 inches)

Engineered for concealed or exposed installations, this insulation delivers dependable performance with a finished look and minimal mess. Choose the size that fits your project and enjoy lasting comfort.