Owens Corning Flame Spread 25 R-19 fiberglass insulation arrives as a preformed flexible blanket with extended flanges for easy, tidy installs. It’s designed for wood or metal framing in walls, floors, and ceilings where you want reliable thermal control and a neat finished appearance—without the drama of dust, sag, or excuses.

Key Features & Design

• Flame Spread 25 rating for safer exposed assemblies.
• R-value R-19 with a thickness of 6.25 in. x 24 in. x 96 in. per batt, with Extended Flanges for enhanced fit.
• Facing options: FSK (foil-scrim-kraft) or PSK (poly-scrim-kraft); both act as vapor retarders and provide a neat finished appearance.
• Excellent thermal control and effective acoustical performance.
• Provides long term performance and will not settle nor slump within wall cavities.
• Less dust than other fiberglass insulation products, improving on-site cleanliness.
• Excellent recovery characteristics and compression packaging speeds job-site handling and installation.
• Size details: 6.25 in. x 24 in. x 96 in. — 128 sq ft per bag, 8 batts per bag, with 5 bags per order.

Applications

• Wall, floor and roof/ceiling assemblies where the insulation will be left exposed, or where a low flame spread vapor retarder facing is required.
• Concealed applications of assemblies for non-combustible construction.
• Wood and metal-framed assembly cavities, or attached to surfaces with impaling pins.

Specifications

• R-Value: R-19
• Size: 6.25 in. x 24 in. x 96 in. (5 Bags)
• Sq Ft per Bag: 128
• Batts per Bag: 8
• Facing: FSK or PSK (vapor retarders); provides a neat finish
• Flame Spread: 25