Stone Pathways Becoming Slick in Constant Shade From Tall Trees

Shaded stone pathway under tall trees with dark slick patches, algae film, and leaf debris between joints

Most stone pathways that turn slick under tall trees are not failing because the stone suddenly changed. They are failing because the surface stops drying. Constant shade cuts solar drying, leaf debris holds moisture against the stone, and a thin biological film starts forming long before thick moss becomes obvious. The first checks are simple: … Read more