Black Mountain is a manufacturer of natural products which protect the buildings in which they are installed and their inhabitants. Natuwool is a natural sheep's wool insulation which can absorb up to 35% of its own weight in moisture without affecting thermal performance and releasing it in a safe manner, protecting the fabric of the building as it does so. Magply is a multi-purpose, water-resistant, breathable and non-combustible board, perfect for any aspect of fire protection in a construction. Magply continues to grow from strength to strength with its exceptional performance in each EN standard fire test for which it is submitted.