Michael Taylor Architecture + Design was asked to build a quiet rural retreat for a couple the firm already knew, having earlier completed their condominium interior in busy downtown Toronto. The new site could not be more different: a heavily treed slope rising steeply above a calm lake, with a private beach below dotted with old tree stumps. The property occupies the shoreline of Percy Lake, close to Algonquin Park, Ontario . Its bedrock is Canadian Shield granite and stretches of that stone a