How is rFOIL™ installed?
Depending upon the application, rFOIL™ can be installed in numerous ways. In pre-engineered steel buildings, rFOIL™ is installed either above or below the purlins supporting the metal roof and sidewalls. In new construction, it’s most often installed on the outside of the purlins. rFOIL™ usually runs perpendicular to the purlins, and in the same direction as the exterior metal. In retrofit applications, it is easiest to install rFOIL™ directly to the inside of the purlins, and running parallel. rFOIL™ requires an airspace, ideally at least ¾”, to effectively redirect heat transfer. This is easily accomplished when installing over purlins spaced 5’ apart, since the products own weight creates a natural drape of 2½” along this span. When installing rFOIL™ products under concrete, it is important that the reflective surface does not come in contact with curing concrete. An adverse chemical reaction occurs between the lime contained in concrete and aluminum, which will oxidize and create a
