Ottawa : Règlement no 2013-416, art. 17 — Property Standards By-law

1) The exterior walls and their components shall be maintained so as to prevent their deterioration due to weather or vermin, and shall be so maintained by,

• a) painting, restoring or repairing of the walls, coping or flashing; or
• b) the waterproofing of joints and of the walls themselves. 2) The visible surface of all exterior walls shall consist of materials commonly used or designed as building components. 3) Patching and repairs to exterior walls shall be made with the same or visually similar material and shall blend with the existing adjacent material or the whole shall be painted or clad to form a solid appearance with the surrounding surface. 4) Appropriate measures shall be taken to remove any unsightly markings, stains or other defacement, including graffiti, occurring on an exposed exterior surface and, where necessary, to restore the surface as nearly as possible to its original condition. BY-LAW NO. 2013-416 5) All exterior surfaces shall be of materials which by themselves or when treated provide adequate protection from the weather. ROOF