Sheep Wool Insulation Batts
Sheep wool insulation is a natural, renewable fiber insulation material processed from sheep fleece. The material combines excellent thermal performance (lambda 0.033-0.040 W/mK, R-value 3.6-4.3 per inch) with natural moisture management properties — wool fibers can absorb up to 30% of their weight in moisture without losing insulation effectiveness. The keratin protein structure provides natural fire resistance with an auto-ignition temperature of 560-600 degC (twice that of wood), self-extinguishing behaviour, and low smoke/toxicity. Carbon makes up 50% of wool's weight, with 1 kg of clean wool storing 1.8 kg of CO2. Available as batts, rolls, and loose-fill for wall, ceiling, and floor applications.
- Wall cavity insulation (timber and steel frame)
- Roof and ceiling insulation
- Floor insulation (suspended floors)
- Acoustic insulation (internal walls)
- Green building and Passive House construction
- Renovation and retrofit projects
- Commercial and residential applications
- Heritage building restoration
Sheep wool has been used for insulation and textiles for thousands of years, with pastoral communities historically using wool for building insulation, clothing, and shelter. Modern building insulation applications developed in the 1970s as environmental awareness grew, with the first commercial wool insulation products appearing in New Zealand and the UK where sheep farming traditions were strongest. The Australian wool insulation industry emerged in the 1990s, leveraging the country's position as the world's largest wool producer (55% of global raw/processed wool). Mountain Made became Australia's first locally manufactured sheep wool hybrid insulation, using by-product wool from carpet manufacture. International brands Thermafleece (UK, est. Yorkshire) developed optimised 75% wool + 25% recycled fiber blends, while Terra Lana (NZ) created custom-manufactured high-density products. Black Mountain (UK) established dedicated manufacturing facilities for both wool and hemp insulation. Recent developments focus on higher-density acoustic products, improved borax treatment processes, and EPD/carbon sequestration verification. The Declare Red List Free certification (Terra Lana) and GreenSpec listings (Black Mountain) reflect growing industry maturity.
DISCLAIMER: This specification document is generated from the CLAD Materials Atlas Database. Information is for general guidance only and does not constitute professional engineering advice. Values are typical and may vary by batch, manufacturer, and production run. Verify suitability for specific project applications independently.