50mm Naturheld Flex Wood Fibre Thermal Insulation - 1220mm x 575mm - Pack of 12

50mm Naturheld Flex is a high‑performance, flexible wood‑fibre insulation batt designed for exceptional thermal comfort, acoustic absorption and healthy building performance. Manufactured in Germany from sustainably sourced wood, it offers a natural, breathable and energy‑efficient alternative to conventional insulation materials. Naturheld Flex is a soft yet dimensionally stable insulation slab made from finely processed wood fibres. Its elastic structure allows it to friction‑fit securely between studs, rafters and joists, ensuring a tight installation without gaps or thermal bridges. The material is vapour‑open, helping buildings regulate moisture naturally while supporting a comfortable indoor climate. Engineered for both new builds and renovation projects, Naturheld Flex performs exceptionally well in timber frame walls, pitched roofs, ceilings and internal partitions, delivering year‑round comfort and long‑lasting performance.

CHARACTERISTICS

• Low thermal conductivity for improved energy efficiency.
• Compressible structure friction‑fits tightly without sagging.
• Supports natural moisture regulation and healthier indoor air.
• Dense fibre structure reduces airborne sound transmission.
• Made from renewable wood fibres from responsibly managed forests.
• Non‑irritant and easy to cut on site.
• Low embodied carbon and fully recyclable at end of life.

APPLICATION

• Timber frame external walls
• Pitched roof insulation
• Internal partitions
• Ceilings and service zones
• Eco‑builds and low‑energy homes
• Renovation projects requiring breathable insulation

CERTIFICATION