Remove Mildew From Roof Shingles

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

Remove mildew from roof shingles.

One way to determine if it s mildew is to put a few drops of chlorine bleach on to the black mark. Living in a humid area of the country like florida you ve probably seen your asphalt shingle roofs with unsightly dark streaks on them. Remove black stains from roof shingles to preserve the appearance of your home s roof. Mold stains can form on roof shingles that are in permanent shade.

These black streaks are unsightly and can diminish the appearance of the entire exterior of the home. A few years ago commercial roof cleaning products containing hydrogen peroxide lye were commonly recommended to remove mildew. City water is generally 80 100 psi. Each shingle on the roof is rinsed.

Once the wash kills the algae it needs to be well rinsed to remove it from your roof. If it s dirt the dark stain will remain but if it s mildew the stain will go away. The pressure on the shingle is less than 100 psi. The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae.

It is not uncommon for roof shingles to turn black over time. Apply a storebought or diy cleaning solution to remove the moss. When that happens it is generally caused by mildew algae mold or dirt stains. The broom allows me to cover 24 at a time at the full flow rate of whichever pressure washer i m using.