17-0412 v3.1/Phenol Formaldehyde Polymers in Foam Board Insulation

Note: This exception has been consolidated into RL-009 Formaldehyde for LBC 4.0. Project teams pursuing LBC versions released prior to 4.0 may use either I10-E9 and other formaldehyde exceptions addressing specific product types, as applicable, or RL-009. RL-009 may not be used in combination with other formaldehyde exceptions under the Red List Imperative.


Because foam board insulations with low levels of phenol formaldehyde are preferable to alternative foam board insulations that may contain HFRs, the Institute is creating the following new exception:

I10-E23 Phenol Formaldehyde Polymers in Foam Board Insulation
Foam board insulations containing phenol formaldehyde polymers may be used if, as specified in the California Air Resources Board (CARB) Regulation,

      "The phenol formaldehyde polymer in the insulation contains acceptable levels of free/residual formaldehyde, and - the phenolic foam boards' bonds are between formaldehyde and phenol, resorcinol, cresols, or a mixture thereof."

To demonstrate compliant levels of free/residual formaldehyde, the manufacturer or supplier must:
- Conduct testing of the polymer in accordance with ISO 11402 (Formaldehyde content) or EN 717 (Formaldehyde emissions) or an equivalent standard, and
- Document that test results were below the CARB formaldehyde limits (content or emissions).

This exception does not apply to polymeric materials with urea-formaldehyde or urea-melamine or mixtures of these materials with phenol formaldehyde.

Post ID 6459

Still need help? Contact Us Contact Us