The homeowners had heard unpromising things about using concrete for floors in a Maine climate, so they chose porcelain tiles that mimic cement for the ground floor of the great room. The dining room is to the left. The kitchen has flat-panel cabinets and high stools based on a Marcel Breuer design. The living room rug and kitchen range hood are from Overstock.com. A custom suspended entertainment center and a cultured stone veneer fireplace with a suspended hearth are at the right.