Roof Discoloration Cleaning

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.

Roof discoloration cleaning.

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. 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. 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.

Do shingles on your north west or other shaded roofs have streaky moldy stains. Directions for mixing solutions of these ingredients may vary among shingle manufacturers and depend on the amount of discoloration. Algae can be killed and the stains removed using chemical cleaners though they usually return over time. Here s how to clean the.

A typical solution should be one part chlorine bleach and one part water. Make your shingles last longer. Cleaning tiles with harsh chemicals and pressure washers can erode tile coatings and paint. How to clean roof stains wash your shingles where the sun doesn t shine.

Tiles are also very fragile and can crack easily under pressure. Other cleaning chemicals or methods should not be used without approval of the shingle manufacturer. Part 1 making preparations for chemical cleaning. No pressure washers please.

Avoid using such measures when possible.