How To Clean Mildew Off Roof Shingles

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.

How to clean mildew off roof shingles.

Do it yourself and save big bucks. You must let the roof dry before a second application of mix. So it pays to clean your shingles as soon as you spot algae growth. If it s dirt the dark stain will remain but if it s mildew the stain will go away.

A mixture of trisodium phosphate tsp bleach and water will also remove stains. 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. Now if you live where cleaning off mildew from exterior surfaces is a constant chore the just hit the moss with the same bleach solution. Then use a long handled brush to scour the surface of the shingles and loosen stuck on mold while it s dry and brittle.

Allow the roof to dry thoroughly. Some of this growth including the stains from algae spores. One way to determine if it s mildew is to put a few drops of chlorine bleach on to the black mark. But once the algicide wears off your roof hosts an all you can eat buffet for the neighborhood algae spores.

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. One day you may notice that your roof is turning black or fungus is spreading across of it. How to clean roof shingles. Mold stains can form on roof shingles that are in permanent shade.

These stains will discolor your roof and damage the shingles over a period of time if left alone. Inspect the roof for any remaining fungus. A few years ago commercial roof cleaning products containing hydrogen peroxide lye were commonly recommended to remove mildew. 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.

Cleaning due to evidence of permanent asphalt shingle damage caused by high pressure powerwashing. Using shingles that have been treated with algicide keeps the growth at bay for about 10 years thus the 10 year algae warranty. Proper cleaning is an important step in roof maintenance. If it is slimy or any sort of residue comes off on your hand repeat the above steps.