Free of dyes or pigments, Sustainable Insulation’s mottled tan color is the result of the manufacturing process.
CertainTeed has introduced Sustainable Insulation, a fiberglass batt insulation that uses a formaldehyde-free, bio-based binder to hold the fibers together. CertainTeed’s Sustainable Insulation joins Johns Manville’s batt insulation (acrylic binder) and Knauf’s EcoBatt (bio-based binder) in the formaldehyde-free fiberglass insulation market.
Most fiberglass batt insulation is made with phenol formaldehyde or urea-extended phenol formaldehyde to bind the glass fibers together. And though formaldehyde exists naturally at low levels in the atmosphere, it is labeled a known carcinogen by the International Agency for Research on Cancer (IARC).