Woodland, Exterior, House Building Type, Metal Roof Material, Metal Siding Material, and Cabin Building Type “I wanted the buildings to be crisp, bold, and clean,” Coleman said. Exterior vertical siding is made from locally sourced cedar stained in a “hazelnut” shade by Sikkens Cetol SRD.  Photo 10 of 10 in This Retreat in the Cascades is a Bold Take on the Modern Cabin