RetroGreen Energy

RetroGreen Energy operates as a specialized insulation contractor serving St Cloud, Minneapolis, Duluth, and surrounding Minnesota communities. The company holds a 4.8-star rating compiled from 231 client reviews, reflecting consistent quality across residential, multi-unit, agricultural, industrial, and commercial projects. Their service menu covers attic insulation, wall insulation, crawl space encapsulation, foundation insulation, spray foam application, air sealing, soundproofing, and removal of outdated insulation materials.

What distinguishes RetroGreen is their exclusive use of RetroFoam injection foam, a non-expanding biodegradable formula that fills enclosed wall cavities without requiring invasive wall demolition. Technicians inject the material through a single siding course, preserving the home exterior while delivering high R-value thermal performance. For attic projects, they pair NCFI spray foam air sealing with blown-in cellulose, using Honeywell Solstice blowing agents that carry no ozone depletion potential. The company handles rebate documentation for homeowners, streamlining utility incentive applications.

Multiple reviewers highlight specific team members who delivered exceptional service. Nicole described Oren conducting a detailed inspection that identified previously undetected insulation deficiencies, while Nick and his crew resolved ceiling and bathroom fan issues in a single visit. Jason Lampel noted a four-person crew completed his RetroFoam installation in six to seven hours with thorough cleanup, leaving no visible evidence of the siding work. Ashley Suchomel mentioned her 1920s house originally contained newspaper insulation that failed during Minnesota winters, and the RetroFoam solution eliminated drafts without damaging cedar shake siding.