Rigid board insulation has some big advantages over loose fill insulation for builders. And unlike most rigid insulations, which are produced from petroleum byproducts, Greensulate uses a unique process to produce an earth-friendly, VOC-free thermal barrier.
The secret to Greensulate, produced by New York-based Ecovative Design, lies in mycelia. The filament-like structure of these mushroom roots tightly binds agricultural waste products (like cotton burrs and buckwheat husks) into a dense board-like material. The materials are first placed inside a mold, and after about two weeks the panel is removed and dried in an oven, which renders the product biologically inert.
The finished product contains no spores or allergens, and emits none of the VOCs (volatile organic compounds) common in other plastic and foam insulating boards. It meets industry standards for mold growth and vapor transmission, and provides a Class 1 fire rating (check out Ecovative’s video of a blowtorch test between Greensulate and a traditional synthetic foam panel).
Greensulate will be available in standard 4’x8′ sheets, and its durability and r-value will make it ideal for structural insulating panels (SIPs). It’s completely non-toxic, safe to handle and requires no protective masks or clothing for installation. Greensulate is currently installed in a number of test projects, and Ecovative Design hopes to release it commercially soon.
Visit the Ecovative Design website for more information.