THERMAFIBER® INSULATION KNIVES

Thermafiber Insulation Knives are time-saving tools that can be used in the field for quick cutting of Thermafiber mineral wool insulation. A dedicated knife for cutting insulation helps maintain proper fit and performance during installation, especially when working with dense materials like mineral wool. These mineral wool insulation knives from Owens Corning feature serrated blades designed for durability and control, making them a reliable choice for professionals on commercial job sites.

Key Features:

On-Site Tool - Ideal for cutting mineral wool insulation directly at the job site
Fast Shipping - Available for overnight shipment when needed
Quick & Clean Cutting - Serrated edges help make smooth, efficient cuts through the insulation

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Specifications & Literature

Data Sheets (1)

Safety Documents

Building Enclosure Solutions

Owens Corning® Enclosure Solutions offers one of the largest portfolios of commercial insulation products for walls, roofs, and below-grade foundations. Engineered with Owens Corning technical expertise and supported by Building Science, Owens Corning® Enclosure Solutions deliver buildings that perform without compromising design.

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Performance Attributes

Owens Corning offers a mineral wool knife that works best with Thermafiber® Mineral Wool insulation. This 11″ premium insulation knife, featuring a durable blade, is built for tough job site conditions, such as cutting through dense mineral wool insulation in cold weather, around tight corners, or in areas with limited access. The serrated edge helps grip the material during cutting, making it easier to control and reducing the need for excessive force. These knives reduce material waste and support an efficient installation process. Always take proper safety precautions and wear personal protective equipment, such as cut-resistant gloves, when using insulation knives.

Easy Installation

Applications

Thermafiber® Insulation Knives are used on job sites where mineral wool insulation needs to be trimmed or fitted during installation. A clean cut is particularly significant for commercial wall insulation, where gaps or uneven edges can reduce fire resistance and thermal performance. Using a dedicated mineral wool insulation knife also helps ensure a more precise fit around framing, anchors, or other irregular areas. The serrated blade design is well-suited for high-density insulation, helping to minimize fiber disruption and improve controlled cutting compared to general-purpose cutting tools.