About TopHat Framing Systems TopHat Framing Systems manufactures retrofit sub-framing for metal-over-metal reroofing. The TopHat Subframe and Zee Strip let a new metal roof go on over the old one without tear-off. The Subframe is punched to fit common panels (R-Panel, 7.2 Rib, standing seam and others). Made in the USA from domestically produced steel; popular sections ship from inventory. Delivered pricing anywhere in the US. For more information, visit www.tophatframing.com.