Roof Discoloration Cleaning

How to clean roof stains wash your shingles where the sun doesn t shine.

Roof discoloration cleaning.

Other cleaning chemicals or methods should not be used without approval of the shingle manufacturer. Here s how to clean the. Make your shingles last longer. Black streaks on the north and west facing and shaded.

Some of this growth including the stains from algae spores are cosmetic but others such as moss cause costly damage to your roof. Roof cleaning in such abrasive ways makes it necessary to re coat the seal and paint to protect the roof from dirt and moss infestation. To keep your roof safe and sightly choose a cool overcast day mix a cleaning solution spray it onto your roof then rinse after 20 minutes. Algae can be killed and the stains removed using chemical cleaners though they usually return over time.

No pressure washers please. A typical solution should be one part chlorine bleach and one part water. Allow the bleach to remain on for 15 to 20 minutes then rinse it off with a hose. Directions for mixing solutions of these ingredients may vary among shingle manufacturers and depend on the amount of discoloration.

The less expensive solution is to spray wash the roof with a 50 percent mix of water and bleach to get rid of the algae. Avoid using such measures when possible. Tiles are also very fragile and can crack easily under pressure. Part 1 making preparations for chemical cleaning.

Cleaning tiles with harsh chemicals and pressure washers can erode tile coatings and paint.