Ottawa : Règlement no 2013-416, art. 18 — Property Standards By-law

1) A roof and all of its components shall be weathertight so as to be free from leaks into the dwelling or loose, unsecured or unsafe objects or materials. 2) Roofing materials or components which have been damaged or show evidence of rot or other deterioration shall be repaired or replaced. 3) A soffit and facia shall be kept in good repair and protected by paint, preservatives or other weather-resistant materials. 4) Dangerous accumulations of snow or ice shall be removed from the roof. 5) A roof shall be kept clean and free from,

• a) rubbish or other debris; and
• b) objects or conditions that may create a health or accident hazard. 6) All chimneys, smoke or vent stacks, aerials, satellite dishes, lightning arrestors and other similar structures and their supporting members shall be maintained in a safe condition and in good repair. DAMPNESS