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.

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. Algae can be killed and the stains removed using chemical cleaners though they usually return over time. Here s how to clean the.

Some of this growth including the stains from algae spores are cosmetic but others such as moss cause costly damage to your roof. Do shingles on your north west or other shaded roofs have streaky moldy stains. No pressure washers please. Directions for mixing solutions of these ingredients may vary among shingle manufacturers and depend on the amount of discoloration.

A typical solution should be one part chlorine bleach and one part water. Black streaks on the north and west facing and shaded. 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. 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.

Part 1 making preparations for chemical cleaning. Make your shingles last longer. Other cleaning chemicals or methods should not be used without approval of the shingle manufacturer. Allow the bleach to remain on for 15 to 20 minutes then rinse it off with a hose.

They re likely to damage the shingles.