Owens Corning Thermafiber UltraBatt R-10 mineral wool insulation delivers top-tier thermal performance, fire protection, and quiet comfort for homes and light commercial spaces. If you want a durable, easy-to-install solution that keeps heat in, noise out, and fires at bay, this is your pick.

Key Features & Design

• Material & performance: Thermafiber UltraBatt mineral wool insulation is designed to provide excellent thermal insulation, fire protection and noise control in residential and light commercial building.
• Density: The semi-rigid batts are more dense than traditional batts or rolls, and are quick and easy to install.
• Durability: Noncombustible, moisture resistant, noncorrosive, nondeteriorating and mold resistant.
• R-value: R-10
• Recycled content: Minimum 70% recycled content
• Sizes: 2.5" x 16" x 48" (42.7 sq ft per bag); 2.5" x 24" x 48" (64 sq ft per bag)
• Standard & custom widths: Standard thicknesses are available with a vapor-retarding foil facing. Available in standard widths for both wood and steel stud framing. Non-standard thicknesses and sizes are available upon special request.

Installation

• Measure & cut: UltraBatt insulation is easy to cut with a serrated knife for custom fitting around electrical boxes, pipes, duct-work, wiring, or between non-standard studs and joist.
• Squeeze & insert: UltraBatt insulation is flexible and pliable; simply squeeze the sides to compress the insulation and insert into the desired wall.
• Release & expand: Once in place, UltraBatt insulation naturally expands to fill in the space, creating a snug, custom fit.