Of no small importance for the tightness of the overlap is the state of roofing Material Under the Tile. TheFore, The Damaged Roofing Material SHOULD BE Replaced. With The Help of a Sharma Knife, A Damaged Section of the Roofing Material is Cut Out and Appled in Its Place, The Dimensions of Which Should Be Slightly Larger. The Patch Is Attached to Place with the Help of Waterproof Adhesive.