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March 28, 8:30 AM [GMT -5]

I've always wondered about this. Thanks Family Handyman!

September 09, 7:18 PM [GMT -5]

Sorry, meant to say QSE 3000. Just a typo

September 09, 7:15 PM [GMT -5]

Inquired a friend that had the same thing and said he used QSO3000 from cleanertoday dot com. I bought the kit for about 100 bucks and it worked like a charm. At first it didn't seem to have cleaned it enough, but after a few rain falls, looks like new

September 09, 5:54 PM [GMT -5]

The streaks become more noticeable depending on pollution in the area. I would NEVER hire anyone to clean my roof. The use of bleach [toxic to vegetation around home] will rapidly age the shingles, also it's applied with a pressure washer. A pressure washer will remove the gravel on the shingles & take years off the shingles. Dark shingles don't show the streaking neither does a tin roof.

August 05, 3:30 PM [GMT -5]

The zinc and copper stripes works to an extent. The problem with this is that it only works the first 5 - 7 feet generally. You could string copper wire in intervals across the roof.

There are also many professional roof cleaning companies that use a bleach to water solution to clean black streaks from roofs. Hope this helps anyone who has questions regarding this. Garret

July 20, 3:15 PM [GMT -5]

I've never heard of this before, but love this idea.
We have a cistern in which the water supplies our showers, toilets and washing machine. Is this a still safe "black streak" preventative?

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Prevent Black Streaks on Roof

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