Gerster Insulation Products have been tested in accordance with ASTM C518-85, the Australian Standard for thermal efficiency, & are supplied at the correct density & thickness to guarantee their specified Thermal Rating.

Gerster Insulation Bulk Fill and Wool Blend Batt insulation is treated to the highest standards for protection against moth, carpet beetle attack and rot resistance.

When professionally installed to our specifications, Gerster Insulation products are Guaranteed for the lifetime of the structure in which they are installed and conform to the new Insulation Standard AS/NZS 4859.1.2002.