roof mold

Old 02-18-03, 06:33 PM
phil odonnell
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roof mold

Have a lot of moss and mildew formed on the north side of my roof, half mile from the ocean in southern california. Moss is formed under the edge of the shingles. Roofing material is shingles, over wood shakes [I'm told]. No leaking but an awful lot of green, has run off nd stained the driveway green as well. Pressure wash ? bleach ? other ?
Old 02-23-03, 05:47 PM
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Contact your County Extension office and see what they say. The extension office deals with agricultural stuff (moss is a plant) and will give you the best procedure to remove it. The local office will have better info on the genus of moss in your area.

Are you sure that it's moss and not some kind of mold?
Old 02-24-03, 11:41 AM
phil odonnell
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Not sure, could be mold rather than moss just looks quite a bit like moss.
Old 02-25-03, 05:07 AM
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The key to keeping off the mold and moss is copper. Most home improvement stores will carry copper sulfate or a variation of it for roofs. Another thing that works will is to have a copper wire strung across the peak of your roof. When it rains the copper washes down the roof and no more mold or moss. This is very popular in the northwest. If you do not want to do either of the following, you can wash your roof with a pressure hose, using dish detergent. Get it real suddsy and spray it on. Do not get on the roof. One reason you are having alot of problems is that you have asphalt over your old wooden shingles. Those little animals which mold and mildew are, love those old shingles.

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