Mold On Roof


  #1  
Old 09-03-03, 09:41 AM
MIKE BREH
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Mold On Roof

I HAVE MOLD IN THREE SMALL AREAS OF MY ROOF. THE ROOF IS LESS THAN TEN YERS OLD AND THE PATCHES ARE SMALL. THE ROOF IS 25 YEAR ASPHALT. CAN I GET RID OF THESE BY USING A MILD BLEACH SOLUTION? OR IS THERE SOME PRODUCT COMMERCIALLY AVAIABLE?
 
  #2  
Old 09-03-03, 01:15 PM
Join Date: Jul 2002
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You can use bleach on your roof. The stronger the solution, the better it will work. However, the most common suggestion is 1/3 bleach, 1/3 water, 1/3 TSP (detergent). There are also some solutions already prepared. I am most familiar with SHINGLE SHIELD by Chicago Metallic. Check with your local shingle retailer to see if you could get some. I think Chicago Metallic has a website.

IF YOU USE BLEACH, BEWARE OF THE RUNOFF!

Bleach and foliage do not mix well. Be sure to water down all of your plants, grass, shrubs, whatever, both before and after you treat the roof. (Wherever you have runoff)

A common practice is to put the solution in a garden or other LOW pressure sprayer, soak the area needing treatment, wait 15 minutes or so, then rinse it off. It may take more than 1 treatment, depending on how bad the algae is.

You could/should then put a copper or zinc strip at the top of your roof because the mold/fungus/algae WILL come back. The average return after cleaning is around 2 years. This copper/zinc strip will keep the fungus from returning for awhile. There is also zinc strip made by Shingle Shield as well.

Zinc strips and copper strips will perform the same function.

If you want to spend some money, there are businesses that clean roofs and give guarantees.

Good luck.
 
 

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