Owens Corning Thermafiber UltraBatt R-15 is a dense mineral wool insulation batt designed for superb thermal performance, fire protection, and quiet comfort in residential and light commercial spaces. Built for builders, remodelers, and DIY enthusiasts who want dependable insulation without the drama.

Key Features & Design

• Material: Thermafiber UltraBatt mineral wool insulation — noncombustible, moisture resistant, noncorrosive, nondeteriorating, and mold resistant.
• Thermal performance: Energy-saving insulation with an R-15 rating to help keep heating and cooling costs in check.
• Fire protection: Provides reliable fire resistance to help protect occupants and property.
• Sound control: Helps control sound between floors and walls for a quieter living or working space.
• Eco-friendly: Minimum 70% recycled content.
• Facing options: Standard thicknesses are available with a vapor-retarding foil facing.
• Framing compatibility: Available in standard widths for both wood and steel stud framing; non-standard thicknesses and sizes are available upon special request.
• Durability: Noncombustible, mold resistant, and designed for long-lasting performance without deterioration.

Sizes & Coverage

• 3.5" x 15" x 47" — 29.4 sq ft/bag
• 3.5" x 23" x 47" — 45 sq ft/bag
• 3.5" x 16" x 48" — 32 sq ft/bag
• 3.5" x 24" x 48" — 48 sq ft/bag

Installation

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

Powerful performance without the hassle—UltraBatt keeps your spaces comfortable, energy bills reasonable, and your project on track.