Zylstra Harley Davidson

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Project Solution


When we got a call from Zylstra Harley Davidson in Dallas Center, Iowa, requesting more information about HY-Fi, our revolutionary hybrid insulation system, we knew this would be the perfect application for HY-Fi. The issue Zylstra Harley Davidison was having was the cost to insulate a large commercial showroom to R-21 specifications. Enter HY-Fi. With only 2" of closed cell foam blown in the wall cavaties, they quickly installed a layer of R-8 HY-Fi directly onto the studs that allowed them to reach R-21 at a lower cost than what SPF alone would have cost. In addition to reducing heat flow by radiation, HY-Fi’s multiple layers also reduced convective heat transfer. Combining HY-Fi’s superior radiation protection with traditional insulation in a hybrid system created superior resistance to heat transfer that allowed Zystra to efficienctly control the temperature within their showroom. Project Solution: The R-21 wall insulation system specifed was a hybrid application consisting of 2” of closed cell spray foam and HY-Fi, a multi-layer reflective insulation. Combining the technologies provided a more cost effective air sealing and thermal insulation system than spray foam alone.

Project Scope


Location Ames, IA
Contractor Walker Spray Foam
Building Size 6,000 sq. ft.
Date Completed April 2014
Product HY-Fi®
Market Light Commercial
Application Walls
Building Type Wood Framed

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