Sustainability claims that survive legal review

A revised Green Guides landscape, an EU directive on environmental claims substantiation, and a genuinely active plaintiffs' bar have made vague environmental marketing a measurable liability. The response inside most manufacturers has been to stop making claims at all — which throws away the commercial return on work already paid for.

The safe path is not silence. It is specificity. Claims fail review when they are unqualified, comparative without a stated basis, or attribute-level statements dressed up as product-level ones.

Three rewrites

• 01"Eco-friendly insulation" becomes "Contains 71% post-consumer recycled glass by weight (third-party verified, 2026)." One is a vibe; the other is a fact a specifier can put in a submittal.
• 02"Carbon neutral" becomes "Cradle-to-gate GWP of 8.4 kg CO2e per m2, a 23% reduction from our 2021 baseline (EPD, verified 2026)." The second claim is harder to write and much harder to attack.
• 03"Recyclable" becomes "Recyclable through commercial C&D streams where facilities accept mixed rigid PVC — available to roughly 44% of US population." Qualified availability is required, and stating it honestly is a differentiator when competitors do not.

Build the claim register

The mechanism that makes this repeatable is a claim register: every approved claim, the exact permitted wording, the evidence that substantiates it, the expiry date of that evidence, and the channels it is cleared for. Sales pulls from the register. Marketing does not invent language downstream of it.

When the EPD is renewed and the number changes, the register tells you precisely which brochures, spec sheets and web pages are now wrong. Without it, you find out from a customer.