Natural Insulation

Black Mountain Insulation

Black Mountain Insulation Ltd was established in 2007 to meet the increasing demand for natural building products in the green build sector. Their products contain a 95% natural fibre content – one of the highest available on the market, whilst some others use a plastic 'filler' in their product.


The original wool insulation. Thermafleece offers the best performing range of natural insulation on the market. Fifteen years of research and development has enabled us to provide a unique range of products that combine natural and recycled fibres at their optimum proportions and density. This ensures that you get the full benefit of quality natural fibres such as wool with enhanced performance, durability and sustainability. Our research shows that using 75% wool in combination with recycled fibres outperforms alternative products with a higher percentage of wool.

Download Therma Fleece Cosywool Fact Sheet

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