shingle cleaning


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Old 03-23-08, 07:28 AM
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shingle cleaning

I have red asphalt shingles and because of the treas around my house, I have what looks like mildew on my roof. Is there a good way to clean the shingles. I am afraid to use bleach so as not to turn my red roof white. Please advise.
thanks
 
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Old 03-23-08, 07:48 AM
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A dilute mixture of bleach/water won't hurt your shingles, the color is in the granules. Now, as to what it may do to the trim, siding, or shrubs...I can't say. Put a little bit of dish soap in the mix to help it cling to the roof. You can use a garden sprayer to apply it to the roof, then hose it off after about 10 min. Better to do on a cool cloudy day, to give it a chance to work w/o evaporating. No pressure washers, no stiff scrub brushes (tho I have used a VERY soft bristle brush on a pole to work it in a bit)

Cover all that other stuff, or wet it down before and after.

Be careful up on the roof, the bleach mixture is very slippery.

What will you be doing to help prevent reoccurance?
 
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Old 03-23-08, 12:52 PM
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When using chemicals to clean shingles it's sometimes helpful to buy a few lengths of 4" PVC pipe to temporarily extend the downspouts further away form the house.
 
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Old 03-23-08, 04:56 PM
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Thanks Gun

Thanks Gun, I will give it a shot. As for as it doing it again, not sure at this time how to stop that.
 
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Old 03-23-08, 05:58 PM
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They make metal strips...(zink, copper??) that can be placed under the upper courses of shingles. Basically they poison the algae/mildew and prevent it from growing back. Also, is it time to call a arborist and prune the trees?
 
 

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