Roof stain removal

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Old 10-19-10, 10:13 AM
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Roof stain removal

What is the most effective & safest way for me to remove stains from my roof? I've searched on the net for some things & figured I would ask people who have done this before.

Thanks
 
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Old 10-19-10, 12:17 PM
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What type of roof? what kind of stains?
 
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Old 10-19-10, 01:26 PM
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Thanks for your response. I would not know how to answer either of those questions. But I took a couple of pics to show you.

I hope this helps.





 
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Old 10-19-10, 01:39 PM
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Mildew is what you have.....bleach solution (50/50 mark?) applied with a garden sprayer and rinse with a hose.

Installing (or having someone install) zinc strips in the upper course of shingles will prevent this in the future. Just do a search for "roof mold prevention".
 
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Old 10-19-10, 01:41 PM
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One quart bleach + 1/4 cup TSP + one gallon warm water. Mix in pump sprayer and spray on roof on a cool, cloudy day. Keep moist for at least 15 minutes and then hose off with garden hose. Do not use a pressure washer.
 
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Old 10-19-10, 02:43 PM
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Will a regular spray bottle work?
 
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Old 10-20-10, 06:24 AM
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Ya, but you'd be forever trying to get the job done
 
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Old 10-20-10, 07:17 AM
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Lol. Not to mention my forearms burning from squeezing the bottle a million times.
 
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Old 05-09-11, 09:40 AM
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Just found this thread and cant wait to try it... My roof has had "Skid marks" for years. Just curious if I need to worry about the runoff destroying my lawn as it exits the downspout?

thanks guys.

Dave
 
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Old 05-09-11, 10:05 AM
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Dave the run off coming off of the roof should be well diluted with the water you are rinsing it with...... so I wouldn't expect any issues although you could wet the run off area with extra water as you go to make sure the bleach is well diluted.
 
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Old 05-09-11, 10:07 AM
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great advice. Thanks. I'll be sure to dilute the area. and will post results!
 
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