How To Clean Mildew Off Roof Shingles

But that would only make sense if the shingles were worn out.

How to clean mildew off roof shingles.

One day you may notice that your roof is turning black or fungus is spreading across of it. Proper cleaning is an important step in roof maintenance. To clean mold off a roof start by putting on rubber gloves a breathing mask and goggles to protect yourself from the harsh cleaning chemicals. How to clean roof shingles.

If it is slimy or any sort of residue comes off on your hand repeat the above steps. These stains will discolor your roof and damage the shingles over a period of time if left alone. Oxygen bleach lightens stains as well and is less harmful to the environment but it doesn t produce as immediate or dramatic an effect as chlorine bleach. So it pays to clean your shingles as soon as you spot algae growth.

Mold stains can form on roof shingles that are in permanent shade. Some of this growth including the stains from algae spores. You must let the roof dry before a second application of mix. Inspect the roof for any remaining fungus.

But once the algicide wears off your roof hosts an all you can eat buffet for the neighborhood algae spores. That ll kill it off but won t inhibit regrowth so just rewet the roof with the bleach solution whenever cleaning off the rest of the place. You could replace all the roofing with new shingles dark enough to disguise the staining or with shingles laced with copper granules which are lethal to algae. 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.

Cleaning due to evidence of permanent asphalt shingle damage caused by high pressure powerwashing. One way to determine if it s mildew is to put a few drops of chlorine bleach on to the black mark. 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. Then use a long handled brush to scour the surface of the shingles and loosen stuck on mold while it s dry and brittle.

If it s dirt the dark stain will remain but if it s mildew the stain will go away. Allow the roof to dry thoroughly. Using shingles that have been treated with algicide keeps the growth at bay for about 10 years thus the 10 year algae warranty. A few years ago commercial roof cleaning products containing hydrogen peroxide lye were commonly recommended to remove mildew.