Increase your roof R-values and structural stability with ACH Foam Technologies' R-Control Structured Insulated Panels, which provide R-values of up to R-38. In the application shown here, the R-Control SIPs were installed along the perimeter of the building while Foam-Control nailbase roof panels filled the center of the roof (courtesy of Keystone Homes). For more info, go to HousingZone.com/PBinfo and enter # 312
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