A still common sight in old #Charleston is the clay tile roof, which has been in vogue since the origins of the city in the 17th century. Clay is abundant in the Charleston area, and easily fashioned into bricks or tiles by baking in kilns. Clay is made up of natural compounds silica and alumina, as well as various amounts of water. The clay in Charleston’s coast plain is well-saturated with water, which gives the clay a very low thermal conductivity. With clay tiles, the double advantage is that heat does not pass through as easily, keeping houses cooler from scorching Summer sun outside, and in the Winter, retaining heat inside. The raised edges and depressed interior of the tiles, called cap and pan style, also serves to facilitate air flow in the cap and water run-off down the pan. This is the #PinkHouseTavern in the #French Quarter, and the style of the double-hipped roof is actually a Dutch Gambrel. <img src=”Clay Tile Roof” alt=”Pink House Tavern”>