Who is responsible for completing and signing the contractor's material and test certificate for medium-expansion foam systems?

• A. The Owner
• B. The Contractor
• C. The Manufacturer
• D. The Inspector

Answer: (B)

Documentation for the installed medium-expansion foam system is created and signed by the contractor. This certificate records exactly what materials were used (including batch numbers), the proportioning and testing results, and verification that the installation follows the contract documents and applicable standards. Signing it is the contractor’s way of attesting that the work was performed correctly and that the documentation accurately reflects the on-site testing and materials.

The owner generally relies on the contractor to provide this documentation rather than signing it themselves. The manufacturer can supply product data and factory test information, but it’s the field installation and testing that the contractor certifies. The inspector may review and verify compliance and may sign off on the system, but the responsibility to complete and sign the contractor’s material and test certificate lies with the contractor.