Independent third-party testing extended the MicroPro SIENNA Select weatherability profile to a 25-year exterior service life under southeastern climate conditions.
Background
Koppers Performance Chemicals has spent the better part of a decade building the technical, regulatory, and field-trial infrastructure required to validate new preservative chemistries at production scale. The work behind this announcement reflects investments in lab capacity, partner relationships, and customer feedback channels that span our North-American footprint.
What this means for plants and specifiers
Operationally the change is largely invisible — same shipping cadence, same handling guidance, same daily QA. The longer-term implication is that specifiers and treaters can now lean on the updated data when bidding into projects with extended-warranty requirements or sustainability scorecards.
What's next
Field-trial data continues to accrue and we plan to publish an updated technical bulletin in the next quarter. As always, the technical-services team is the right starting point for project-specific questions.