Granite City Insulation can provide in most instances an eco-friendly insulation that is manufactured from naturally occurring and/or recycled raw materials, and bonded using a bio-based technology that is free from formaldehyde, phenols, acrylics and with no artificial colours, bleach or dyes added.  The main provider of our insulation is Knauf, and they were pro-active in developing a insulation that would satisfy the environmental concerns of architects and residential homeowners alike.