Roof Discoloration Cleaning

Some of this growth including the stains from algae spores are cosmetic but others such as moss cause costly damage to your roof.

Roof discoloration cleaning. Other cleaning chemicals or methods should not be used without approval of the shingle manufacturer. Cleaning tiles with harsh chemicals and pressure washers can erode tile coatings and paint. 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. They re likely to damage the shingles.

Use a cleaner specially made for killing algae or by spraying a mixture of one part bleach to four parts water with tsp trisodium phosphate or other detergent added in a garden pump up sprayer. Do shingles on your north west or other shaded roofs have streaky moldy stains. Tiles are also very fragile and can crack easily under pressure. Here s how to clean the.

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. Avoid using such measures when possible. Black streaks on the north and west facing and shaded.

Algae can be killed and the stains removed using chemical cleaners though they usually return over time. Part 1 making preparations for chemical cleaning. No pressure washers please. A typical solution should be one part chlorine bleach and one part water.

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