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Spray Foam Insulation Systems
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South St. Paul Secondary School

The Packer Hall Gymnasium renovation was part of a campus-wide energy efficiency initiative to improve building performance and reduce energy consumption. The most significant problem with the building related to student safety caused by condensation dripping from the roof structure onto the gymnasium floor. The standing seam metal roof deck was originally insulated with R-30 vinyl-faced fiberglass blanket. Over time the fiberglass lost most of its thermal efficiency from saturation caused by condensation trapped between the metal deck and the insulation's vinyl facer. At the purlins condensation resulted from compression of the fiberglass (resulting in low R-value) between the roof deck and purlin. The application consisted of fiberglass removal and replacement with the R-30 Staycell® HYBRID System, which consists of 4" Staycell® 265 covered with 1/2" Staycell ONE STEP® 255 intumescent spray foam insulation. Finally, the system was top coated white with Sherwin Williams “Fast-Clad" acrylic latex paint. The HYBRID System was chosen because it was more cost-effective than a standard foam and intumescent coating system.

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