The Couteau d’isolation 300 mm is a long-blade insulation knife designed for cutting insulation materials with precision and ease. Its 300 mm blade provides smooth, controlled slicing through mineral wool, foam, and other insulation panels, ensuring clean edges and accurate fitting.
• Blade length: 300 mm
• Suitable for cutting most standard insulation materials
Send us an enquiry for a quote
| Property | Specification |
|---|---|
| Tool Type | Insulation cutting knife |
| Blade Length | 300 mm |
| Blade Material | High-carbon steel or stainless steel (model dependent) |
| Handle Type | Ergonomic non-slip handle |
| Suitable Materials | Mineral wool, rockwool, foam boards, acoustic insulation |
It is used for cutting insulation materials such as mineral wool, rockwool, foam boards and acoustic panels. The long 300 mm blade allows deep, clean cuts that ensure accurate fitting within framing systems.
The extended blade length allows users to slice through thick insulation in a single pass, resulting in cleaner edges, better fit and reduced material waste. It also makes cutting large sheets faster and more controlled.
Yes. It is simple to control due to its ergonomic handle and long blade. Beginners can achieve straight, smooth cuts when working on insulation for ceilings, walls or partitions with basic guidance.
It is ideal for mineral wool, rockwool, fiberglass, acoustic insulation and most foam-based insulation boards. It is not suitable for hard materials such as wood or cement board.
Depending on the model, the blade can be either serrated (for fibrous insulation like wool) or straight (for foam boards). Both types provide clean, consistent cutting performance.
Wipe the blade clean after each use, especially when cutting fibrous materials. Store the tool in a dry environment and use a protective cover to prevent dulling or accidental cuts.
Not often. Insulation materials are soft, so the blade stays sharp for long periods. If it becomes dull, it can be sharpened gently or replaced depending on the design.
Yes. The long blade allows controlled shaping of insulation to fit around pipes, studs and corners. This helps improve thermal efficiency by reducing gaps and air leakage.
Absolutely. The knife is designed for durability and is commonly used by insulation installers, drywall technicians and construction workers on daily projects.
Wear gloves, use a stable cutting surface and avoid cutting toward your body. Fibrous insulation materials may irritate skin or eyes, so protective clothing and goggles are recommended.
Your request has been submitted successfully.
Own or work here?