What is Biofoam?

Biofoam refers to polymer foams in which a meaningful portion of the carbon content comes from renewable biological sources rather than fossil fuels. Sources can include plant oils, agricultural residues, fermented sugars, cellulose or fungal mycelium.

“Biofoam” is not a single material. Different feedstocks, chemistries and processing methods produce foams with different properties, durability and end-of-life pathways.

Key distinction: Bio-based describes the origin of the carbon (feedstock). Biodegradable or compostable describes how the material behaves under specific environmental conditions at the end of its useful life. The two are independent properties.

Common Misconceptions

Bio-based does not automatically mean biodegradable.
Biodegradable does not mean a material will rapidly disappear in every environment; test conditions and timeframes matter.
Natural content does not automatically make a foam environmentally preferable.
Higher bio-based content does not automatically mean better foam or better overall environmental performance.
A percentage claim is meaningful only when the basis and test method are clear.
Certification, test data and marketing language are not interchangeable.
Sustainability should consider raw materials, manufacturing, performance, useful life and end-of-life — not a single headline number.

For more detail on measurement and end-of-life, see the dedicated pages on Bio-based Content and Biodegradability.