Ladtech, Inc.

LadTech, Inc., headquartered in Buffalo, Minnesota, manufactures patented HDPE manhole and catch basin adjusting rings designed to replace traditional concrete, brick, and mortar grade adjustments in underground municipal infrastructure. Founded by Dwight Wiedrich and now led by CEO Lana Wiedrich, the company has operated for more than 30 years and shipped over 3 million products. Every ring is molded from 100 percent recycled high-density polyethylene, making them impervious to hydrogen sulfide gas and road salt while carrying an H25 traffic rating and a stated 100-year life expectancy. LadTech rings can be as thin as one-quarter inch for precision grade adjustment and seal with butyl rubber to create completely watertight installations that eliminate infiltration and inflow. The product line covers two categories: HDPE manhole adjusting rings for sewer and utility access, and HDPE catch basin adjusting rings for stormwater collection and drainage infrastructure. All manufacturing takes place in the United States. LadTech distributes through a representative network spanning US states, Canadian provinces, and Caribbean territories, with a stated mission to be the global leader in high-performance manhole adjusting systems. The company positions its products as lighter, faster to install, and more corrosion-resistant than concrete alternatives, reducing both labor costs and long-term rehabilitation spending.