Earthwool® insulation batts and rolls are extremely versatile and can be used in applications for residential and commercial applications including HVAC and industrial. Using state-of-the-art proprietary technology, Earthwool is made using recycled glass and with ECOSE® Technology, it does not contain added formaldehyde or artificial colours or dyes, the brown colour is completely natural. Earthwool products are non-combustible, rot-proof, odourless, non-hygroscopic (will not absorb atmospheric moisture) do not sustain vermin and will not encourage the growth of fungi, mould or bacteria.