Superwool® Grade H Non-Woven Fabric

Superwool® Grade H Non‑Woven Fabric is a flexible, low‑biopersistent insulation felt that conforms to complex shapes and recovers after compression, making installation fast and forgiving. It provides effective thermal barriers with low heat storage, so equipment warms and cools quickly without carrying excess mass. Metals processing, ceramics, and energy equipment use it behind hard linings or as wraps and seals that reduce heat loss and protect structures. Typical uses include door and lid seals, expansion joints, and chimney or duct insulation where a lightweight, compliant layer is easier to fit than rigid boards. The material stays stable in common flue‑gas environments and sheds water once dried, which simplifies maintenance and helps avoid premature replacement. For designers, Grade H fabric streamlines builds and supports compact, efficient thermal designs with fewer anchors and less downtime.