Thermafleece UltraWool – High Density Sheep's Wool
Rich in British sheep’s wool - designed to give extra thermal performance where depth is limited and our highest level of acoustic performance


Thermafleece UltraWool is a high density, highly efficient insulation made from 75% British sheep’s wool and  25% recycled polyester. UltraWool is the ideal choice if you are looking for maximum thermal performance when space is at a premium. What’s more, with a density of 31 kg/m3 Thermafleece UltraWool helps provide exceptional acoustic insulation performance in wall, floor and roof systems.


Research shows that using 75% wool in combination with recycled fibres outperforms alternative products with a higher percentage of wool. Our wool rich blend ensures you get the full benefit of sheep’s wool with enhanced performance, breathability, durability and sustainability

UltraWool 90 x 390 8.42m2 per pack
UltraWool 90 x 590 8.50 m2 per pack