POLYWOOL Glass Mineral Wool Blanket is a lightweight, high-performance insulation solution designed for thermal, acoustic, and fire protection applications across commercial and industrial environments.
Manufactured by spinning molten glass into fine fibres, the blanket contains up to 80% recycled content and is bonded using a thermosetting resin to form a resilient and flexible insulation material. Its distinctive golden-yellow appearance reflects its mineral wool composition and consistent quality.
POLYWOOL Blanket provides excellent thermal efficiency and sound absorption, helping to reduce heat loss, improve energy performance, and minimise noise transmission. It is non-combustible, rot-proof, odourless, and non-hygroscopic, and will not support the growth of mould, fungi, or bacteria.
Suitable for operating temperatures up to approximately 350°C, the blanket is ideal for a wide range of applications including HVAC systems, pipework, boilers, vessels, and building services. It can also be used in walls, ceilings, roofs, and ducting, making it a versatile solution for both new construction and retrofit projects.
ADVANTAGES
Optimal fibre diameter
Better fibre network
Less dusty and less itchy
Low ‘K’ Factor
Does not encourage mould growth
Excellent acoustical properties
Non-corrosive
THERMAL PERFORMANCE
POLYWOOL Blanket allows to optimise energy efficiency, prevent heat loss and provide effective thermal insulation. Properly insulated HVAC air duct will be able to limit the heat loss and maintain the desired operating temperature. POLYWOOL Blanket is suitable for rectangular ducts of varying sizes. The glass mineral wool insulation complies with ASTM C518 at 15°C mean temperature. Thermal resistance value as high as R1.60 m2K/W
ACOUSTICAL PERFORMANCE
HVAC air ducts should be well insulated to minimise sound transmission and noise emission. Not only an effective thermal insulation, BROWNIE blanket acts as a natural and effective sound barrier. POLYWOOL blanket is amongst the most effective acoustic insulation solutions when sound proofing is required. Please contact C&I representative for further information
FIRE PROPERTIES
HVAC air ducts act as heat conductors during a fire. POLYWOOL blanket prevents stops fire from spreading to other compartments within a building. Tested in accordance and comply with:
B.S. 476: Part 4 Non-combustibility test for materials
B.S. 476: Part 6 Fire propagation
B.S. 476: Part 7 Surface spread of flame
ASTM E84
CORROSIVENESS
Chemically inert. Will not cause or accelerate corrosion of steel, stainless steel, copper or aluminum due to its specifically inorganic and mineral composition.
Tested in accordance with ASTM C665-12.
