Gibraltar's painted SM-Rib panels are a popular choice for a wide variety of residential and commercial projects. This durable and lightweight panel is ideal for roofing or siding any structure, from a simple shed to a complex residential development. SM-Rib is an exposed fastener panel. Panels are secured to the roof deck with color-matched gasketed screws to prevent leaking. SM-Rib panels are easily cut with shears and being light weight makes them easy to use and transport.