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Rockwool Flexi 1200 x 600mm

Rockwool Flexi 1200 x 600mm

Acoustic Insulation (Sold in Packs)

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ROCKWOOL Flexi® Insulation – Superior Acoustic & Thermal Performance

The ROCKWOOL Flexi® insulation slab is a high-performance solution designed for thermal, acoustic, and fire insulation across a variety of applications. Featuring a unique flexible edge, this insulation ensures a perfect fit between timber and metal studwork, preventing gaps and getting great insulation efficiency.

Made from stone wool, it provides excellent sound absorption, superior fire resistance, and outstanding thermal insulation, making it ideal for partitions, floors, pitched roofs, and separating walls. Whether you’re working on a domestic, commercial, or industrial project, this insulation offers long-lasting performance and simple installation.

What is ROCKWOOL Flexi®?

ROCKWOOL Flexi® is a multi-purpose insulation slab designed to offer enhanced acoustic and thermal performance while providing superior fire protection.

This insulation is widely used in:

  • Timber and metal stud partitions – For excellent soundproofing and thermal retention.
  • Separating floors and walls – Reducing airborne noise transmission between spaces.
  • Pitched roof insulation – Providing excellent thermal and fire resistance.
  • Ceilings and suspended floors – Controlling noise while improving energy efficiency.
  • Commercial and industrial projects – Delivering reliable fire-resistant and acoustic properties.

Why Choose ROCKWOOL Flexi® Insulation?

  • Unique Flexible Edge – Ensures a snug fit, even with changes of temperature.
  • Superior Soundproofing – Effectively absorbs noise and reduces reverberation.
  • Outstanding Fire Resistance – Achieves Euroclass A1 non-combustible rating.
  • Thermal Efficiency – Reduces heat loss, enhancing energy performance.
  • Moisture Resistant – Prevents condensation and damp-related issues.
  • Easy to Install – Lightweight and designed for quick fitting between studs and joists.

Applications of ROCKWOOL Flexi® Insulation

1. Stud Wall Insulation
Designed for timber and metal stud partitions, the ROCKWOOL Flexi® slab creates a high-performance thermal and acoustic barrier, improving comfort in living and working spaces.

2. Floor & Ceiling Insulation
Used between floors and ceilings, it reduces impact and airborne noise while improving thermal efficiency, making it ideal for multi-storey buildings and commercial spaces.

3. Pitched Roof Insulation
Providing thermal and fire insulation, ROCKWOOL Flexi® helps maintain indoor temperatures and enhances fire safety in lofts and roof spaces.

4. Acoustic Insulation for Separating Walls
Highly effective at minimising noise transmission, ROCKWOOL Flexi® is an incredibly useful and cost effective solution for apartments, offices, and hotels, where soundproofing is essential.

5. Industrial & Commercial Use
With its non-combustible stone wool core, it meets stringent fire safety and acoustic performance standards, making it an ideal choice for factories, warehouses, and public buildings.

Easy Installation & Handling

The ROCKWOOL Flexi® insulation slab is designed for quick and easy installation, making it an excellent choice for contractors, builders, and DIY users.

Simply cut the slab with a standard insulation saw or knife, and friction-fit it between joists or studs—no fixings required!

Why Choose ROCKWOOL?

ROCKWOOL is a global leader in stone wool insulation, delivering superior fire safety, energy efficiency, and soundproofing solutions. By choosing ROCKWOOL Flexi® insulation, you benefit from:

Market-leading thermal and acoustic insulation for walls, floors, and roofs.
A long-lasting, non-combustible solution that enhances building safety.
A trusted, sustainable product designed to perform for the lifetime of a building.

Technical Specifications

  • Material Composition: Made from natural stone wool, ensuring durability and high performance.
  • Fire Rating: Achieves Euroclass A1 non-combustible classification (EN 13501-1).
  • Acoustic Performance: Absorbs sound effectively, improving soundproofing in buildings.
  • Thermal Conductivity:
    • 0.038 W/mK (for 50mm to 120mm thicknesses).
    • 0.035 W/mK (for 140mm thickness and above).
  • Water Resistance: Non-hygroscopic and water repellent, preventing moisture build-up.
  • Slab Dimensions:
    • Standard size: 1200mm x 600mm
    • Thickness options: 50mm to 200mm
  • Weight: Lightweight for easy handling and installation.
  • Installation Method: Designed for a friction fit between studs, joists, and rafters.

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