iZiWOOL – Sound Absorption Slabs with Sheep Wool

iZiWOOL is a natural acoustic and thermal insulation panel manufactured from recycled sheep wool and recycled polyester fibres. Offering excellent sound absorption, thermal performance and moisture regulation, it provides a sustainable solution for healthy and energy-efficient buildings.

Eco-friendly product with recycled materials
Eco-friendly product with recycled materials

 

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Description

Natural Acoustic and Thermal Insulation Slabs for Sustainable Buildings

iZiWOOL sound absorption slabs with sheep wool  is a next-generation bio-based acoustic and thermal insulation material manufactured from recycled natural sheep wool combined with recycled polyester fibres. Developed for modern sustainable construction, it combines acoustic comfort, thermal efficiency and natural moisture regulation in a safe, environmentally responsible solution. Manufactured in Greece under strict quality standards, iZiWOOL makes use of one of nature’s most effective insulating materials while reducing environmental impact through local production and short supply chains.

The unique structure of sheep wool fibres creates a comfortable and healthy indoor environment by delivering excellent sound absorption, thermal stability and natural breathability. As a result, iZiWOOL sound absorption slabs with sheep wool contributes to improved indoor comfort while supporting energy-efficient building design. One of the unique advantages of sheep wool is its ability to absorb and release moisture vapour without significantly affecting its insulating performance.

Natural, Safe and Environmentally Responsible

iZiWOOL is a genuinely sustainable insulation solution. Its composition combines renewable sheep wool with recycled polyester fibres, creating a product that balances performance, durability and environmental responsibility. Sheep wool requires relatively low processing energy compared to many conventional insulation materials and naturally contributes to indoor humidity regulation thanks to its hygroscopic properties. This ability helps maintain balanced indoor conditions and supports healthier indoor air quality.

Unlike many traditional insulation products, iZiWOOL sound absorption slabs with sheep wool contains no irritating or hazardous fibres. It is pleasant to handle, safe during installation and does not release loose fibres during transport, cutting or application. At the end of its service life, the material can be recycled, supporting circular economy principles and reducing waste.

Excellent Acoustic Performance

The complex and porous structure of sheep wool fibres allows iZiWOOL to absorb sound energy effectively across a broad frequency spectrum. With sound absorption values reaching αw 0.90 (EN ISO 11654), iZiWOOL helps reduce reverberation and improve acoustic comfort in a wide range of spaces, including residential, educational and commercial environments. Its acoustic properties make it ideal for integration within partitions, suspended ceilings, acoustic panels and lightweight construction systems where sound control is required.

Benefits of Sheep Wool

Sheep wool is recognised as one of the most effective natural materials for both thermal insulation and sound absorption. As a renewable natural resource, sheep wool supports environmentally conscious construction while contributing to healthier indoor environments. Its unique fibre structure provides:

  • High acoustic absorption
  • Excellent thermal resistance and stability
  • Natural humidity regulation
  • Natural resistance to fire
  • Safe and easy installation
  • Compatibility with sustainable and bioclimatic building design
Applications

iZiWOOL sound absorption slabs with sheep wool are suitable for:

  • Acoustic and thermal infill of drywall partitions
  • Suspended ceilings and ceiling voids
  • Timber-frame and lightweight constructions
  • Roofs, attics and loft spaces
  • Wooden floors
  • Acoustic panels and interior acoustic systems
  • Educational facilities
  • Commercial and office environments
  • Residential buildings & Sustainable construction projects
Sustainability

iZiWOOL sound absorption slabs with sheep wool supports sustainable building practices through the use of renewable and recycled raw materials. The low embodied energy of sheep wool, combined with the recyclability of the product at the end of its lifecycle, contributes to a significantly reduced environmental footprint. Its natural breathability and moisture-regulating properties further support the creation of healthy, comfortable and energy-efficient indoor spaces.

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Property Value
Material Composition Recycled natural sheep wool & recycled polyester fibres
Product Form Boards (rolls available subject to minimum quantity)
Standard Thickness 50 mm (other thicknesses upon request)
Standard Dimensions 1200 × 600 mm
Density Approximately 20 kg/m³
Sound Absorption αw up to 0.90 (EN ISO 11654)
Thermal Conductivity (λ) 0.035–0.040 W/m·K
Reaction to Fire EN 13501-1 Class E
Additional Treatment Moth-resistant treatment preserving the natural properties
of wool over time

Acoustic performance may vary depending on product configuration and installation conditions.