Exterior, House Building Type, Metal Siding Material, Metal Roof Material, Wood Siding Material, Cabin Building Type, and Butterfly RoofLine The jagged edges of the roof are meant to resemble the surrounding peaks of the Cascades. The exterior HardiePanel vertical siding is painted “dark pewter” by Benjamin Moore.  Photo 62 of 101 in 101 Best Modern Cabins from This Retreat in the Cascades is a Bold Take on the Modern Cabin