Owens Corning Thermafiber UltraBatt R-23 mineral wool insulation is designed to provide excellent thermal insulation, fire protection and noise control in residential and light commercial buildings. It’s a straightforward, durable solution that keeps comfort inside and drama outside. Delivery is available to select states across the U.S.

Key Features & Design

• Thermafiber UltraBatt mineral wool insulation is designed to provide excellent thermal insulation, fire protection and noise control in residential and light commercial building.
• The semi-rigid batts are more dense than traditional batts or rolls, and are quick and easy to install.
• UltraBatt insulation is noncombustible, moisture resistant, noncorrosive, nondeteriorating and mold resistant.
• Size (per bag): 5.5" x 15" x 47" — 24.5 sq ft; 5.5" x 23" x 47" — 45 sq ft.
• Minimum 70% recycled content.
• Easy to install.
• Mold resistant.
• Product Options: 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 & Fit

• 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.