How To Clean Mildew From Roof Shingles

These stains will discolor your roof and damage the shingles over a period of time if left alone.

How to clean mildew from roof shingles.

One day you may notice that your roof is turning black or fungus is spreading across of it. Extensive mold growth can also expose the interior of your attic or crawlspace to mold spores carrying the problem over to the inside not to worry though because you can clean the mold off with basic household bleach and save. If your household water pressure isn t enough to generate the proper nozzle pressure at the jets the manufacturer recommends boosting it. Graphic left courtesy spray and forget mildew and moss remover.

Using bleach is recommended by most shingle roof manufactures and the arma asphalt roofing manufactures association. Some of this growth including the stains from algae spores. If it s dirt the dark stain will remain but if it s mildew the stain will go away. Moss can cause the leading edges of the shingles to lift or curl which darkening the shingles to restore the inherent beauty of the wood will involve cleaning staining and sealing each shingle for routine mildew and light mold this step can be.

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. Roof cleaning is a topic that draws yawns in new england but causes shudders and screams of agony from florida and points south where vegetable life seeks world domination. The most effective method of cleaning algae and moss from a roof is w ith a 50 50 mix of laundry strength liquid chlorine bleach and w ater. No pressure washers please.

How to clean roof shingles. A few years ago commercial roof cleaning products containing hydrogen peroxide lye were commonly recommended to remove mildew. Mold stains can form on roof shingles that are in permanent shade. Proper cleaning is an important step in roof maintenance.

How do we keep that fungus among us under control. The high powered water jets can damage shingles and remove the shingle granules that protect the roof. One way to determine if it s mildew is to put a few drops of chlorine bleach on to the black mark. They re likely to damage the shingles just be sure to wet your foundation plantings first and rinse everything in clean water when you re done.