Building Science Reality Check: Why Does Spray Foam Fail in Northern Wisconsin?
We recently wrote about the unique challenges of building in USDA Hardiness Zone 6A. If you haven’t reviewed that article, yet, go ahead and skim it over! Continuing that important conversation, this month we’re diving into one of the biggest insulation...
A Winter Milestone: The Day the Heat Turns On!
January in Wisconsin means we’re deep into the construction season, where every day on the jobsite is a test of endurance. As tradespeople, we all know this feeling. You wake up, check the weather, and start the mental calculation of what it’s going to...
Foundation Insulation 101: Interior vs. Exterior Options for Wisconsin Homes
At RVI, we know from experience that foundation insulation isn’t optional in Northern Wisconsin. Sure, building codes will tell you the minimum requirements. But as building science experts, we know you should insulate your foundation regardless of what the code...
Building the Next Generation: How RHS Trades Expansion Is Creating Tomorrow’s Skilled Workers
The School District of Rhinelander (SDR) is making significant strides toward becoming the premier destination for future tradespeople to earn their high school diplomas. The community passed a $26 million referendum in April 2024, which has given the district the...
A Summer That Proved the Importance of Proper Air Sealing
Summer 2025 in Wisconsin has been one for the books, between scorching heat waves and unexpected air quality challenges from Canadian wildfire smoke. While the smoky air has granted us some unusually pretty sunrises and sunsets, this season has also highlighted...About RVI
Since inception in 2000, RVI has been a leader in innovative Air Sealing and Insulating Systems. A family, faith, customer, and community-focused business, RVI is owned and operated by Sam and Ashly Hartmann (pictured above with their children) in their hometown of Rhinelander, WI.