Traditional and timeless. Sleek and strong. HardiePlank® lap siding is not just our best-selling product—it’s the most popular brand of siding in America, protecting and beautifying more homes from coast to coast. All styles are Engineered for Climate® and come primed, or with baked-on ColorPlus® Technology. Inspired by the coastal communities that hug the Eastern seaboard, this siding style is brimming with charm.