The materials palette of this Scarborough beach house was selected for long-term low maintenance and durability, according to builder Jake Gott of Timber Island Builders. The exterior features cypress and ipê trim, mahogany windowsills, ipê decking, galvanized steel beams, and Maibec double-dipped shingles. The roof features red cedar, steel, and copper. “The intent was that the building patinas rather than grays,” says Gott.