Park Model Cabins 400 square feet not including loft or porch. 10" I-beam, double perimeter rail, 16" o.c. from floors, walls, and rood. We use 29 gauge metal roof in various colors and LP Smart-lap siding in various colors or logs. We offer birch or cypress Paneling or Pine or Cedar Tongue&Groove interior which makes the walls 5" thick with the t&g. Laminate flooring in various styles. Concrete or Formica rolled counter tops. Also custom built cabinets. We also triple the studs at the corners and at the windows and doors and use a header. You are getting a stick built cabin but it's on a frame. We offer vinyl thermopane windows that tilt out for easy cleaning. Check out our construction photos.