Roofs are exposed to a lot of aggressions, such as polluted air that contains sulfur, chlorine and nitrogen compounds leading to acid rains, mineral salts, dust, or soot. These atmospheric pollutants together with water and ultraviolet radiation affect the cover materials.

Periodic maintenance works are required throughout the year.

The visual inspection of the roof coating should be performed at least once a year and followed by a closer checking of each important details; however, during the roof warranty period, it is enough to conduct a more detailed inspection every five years. After a heavy storm, it may be in your best interest to have a more thorough inspection completed by roofing Minneapolis MN storm damage professionals.

Check the condition of the accessories on the roof. Damaged or missing ones can cause leakage, degradation or corrosion. Damaged joints or fixtures need to be replaced immediately.

Also check the condition of the cover materials. Corrosion of edges, uneven appearance, cracks or local scratches are signs that the roof needs to be repaired.

The drainage system should be also cleaned every year. Blocked, partially blocked or dirty gutters cause degradation and corrosion. Remove any possible risk of cleaning dirt and debris with a brush and check the system using a water jet.

Maintenance must also include periodic roof cleaning. The surface of the roof should be cleaned with a soft brush and water jet at low pressure. Persistent stains typically caused by mold and mildew can be removed using special, environmentally-friendly detergents. Rinsing should be performed from the ridge to the gutters, after the detergent has been left for a few minutes to take effect.