Sheep's wool, sisal, jute, hemp, organic cotton — fibers that biodegrade and don't off-gas.

This material screens clear across all seven independent toxicology authorities we use on every project.
Natural fiber carpet and rugs — wool, sisal, jute, hemp, and organic cotton — replace synthetic-fiber (nylon, polyester, polypropylene) carpet that comes with PFAS stain treatments, latex SBR backing, and brominated flame retardants. Wool is the premium choice: naturally flame-resistant, naturally stain-resistant from its lanolin coating, dye-fast, soft underfoot, and 100% biodegradable. EBH specifies carpet with wool fiber, natural latex or jute backing, and zero stain-treatment chemistry. The same logic applies to drapery, upholstery, and bedding: natural fibers with mineral or vegetable dyes avoid the entire stack of flame-retardant, PFAS, and formaldehyde-resin treatments that synthetic fabrics carry.

Severity scored 0–10 against the same 10 hazard endpoints we use for the chemical families on the avoid list. Every score is 1–2 — essentially no signal across every endpoint.
Listed alphabetically. Where in a home this material earns its keep.
Wool Carpet & Natural Fiber Textiles shows up on our zero energy homes for a reason. An all electric house with a very small heating load only works if the envelope is right, and the envelope is only as good as the materials you are willing to put in it.
If you are planning a new house or a deep remodel and you want this level of material control, that is the whole job we do. Earth Bound Homes builds in Los Gatos, San Jose, Santa Clara County and across the San Francisco Bay Area.