Gresco Utility Supply is proud to partner with ROTBLOC LLC, an innovative company that is changing the way utilities approach utility pole preservation. Recently recognized by Utilities Business Review as the recipient of the Utility Product Innovation of the Year 2026 award, ROTBLOC continues to demonstrate its commitment to helping utilities protect critical infrastructure while reducing long-term maintenance and costs.
Founded by Kenneth Carhart, ROTBLOC LLC was created with a simple objective: extend the service life of treated posts and poles without relying on stronger or harsher chemical treatments. Drawing on decades of experience in wood products and product development, the company designed a patented solution that uses a physical barrier to protect the most vulnerable area of a utility pole - the bottom section. Manufactured in Bend, Oregon from 100% recycled materials, ROTBLOC products combine durability and sustainability with practical field performance.
At the heart of the company's innovation is ROTBLOC UTL, a utility-specific groundline protection system designed to combat one of the leading causes of premature utility pole failure: groundline degradation. Installed as a durable, non-toxic barrier around the base of the pole, the solution helps protect wooden poles from moisture, microorganisms, and other environmental conditions that contribute to decay at and below the soil line. ROTBLOC UTL also works to keep the chemicals that were originally applied to the pole from leaching, diluting, or migrating. Its patented Adaptive Seal design helps repel water and debris while maintaining substantial contact with the pole, providing long-term protection without the need for additional chemicals or adhesives.
Unlike traditional wraps and coatings that are often damaged or removed during inspections, ROTBLOC UTL is engineered for durability, reusability, and compatibility with routine inspection and maintenance programs. The product can be easily removed and reapplied, allowing utilities to inspect, maintain, and protect their infrastructure without sacrificing the integrity of the barrier itself.
By helping slow groundline deterioration, ROTBLOC UTL enables utilities to extend pole service life, reduce uncertainty around replacing utility poles, and make more strategic use of budgets. The product also supports sustainability goals through its construction from 100% recycled polyethylene. Its ability to help retain preservative treatments within the pole reduces environmental impact over time.
Through our partnership with ROTBLOC LLC, Gresco is proud to help deliver innovative, practical solutions that enhance grid reliability, support infrastructure work, and help utilities maximize the life of their critical assets.
Please contact your Gresco representative for more information on ROTBLOC.