Soft, roll-form thermal polyester insulation blanket for underfloor. Unaffected by moisture, Mammoth will continue to perform once dried out. Non-irritant Mammoth R1.5 Underfloor Blanket Insulation 510mm wide, 20m2 bale Mammoth Modern Insulation™ Underfloor Blankets are designed in a range of widths and are suitable for new and existing homes. The blanket is moisture resistant and designed to be stapled into place between floor joists by an experienced installer or builder. Self-supporting underfloor sections are also available for easy install. Made from 100% thermally bonded polyester fibres, Mammoth insulation is BRANZ appraised, Declare Red List Free, is manufactured in a CarboNZero certified factory, and the underfloor range has R-values up to R1.8. It is a long lasting material that won't sag or settle over time. Safe and easy to work with Mammoth can be torn to length or cut with shears. Pick up Taupaki