Valley cleaning and flashing adjustment often accompany a clay roof tiles repair project. Debris like leaves and twigs can get trapped in the deep channels of a tile roof, causing water to back up under the head-lap. Technicians clear these blockages and check that the metal valley linings are not pitted or rusted through. If the metal is damaged, it is replaced with copper or lead-co... https://kkroofspecialist.com.sg/clay-roof-tiles-repair/