03:07AM | 11/12/02
Member Since: 11/11/02
1 lifetime posts
I have hardwood siding and wood trim that has a heavy mold/mildew issue. The home was painted in 1999 and the paint is high quality and has good coverage. The hardwood siding does not show any of the standard signs of failure. The mold/mildew is on all sides of the home and gets good sun. There are no trees close by.

We have pressure washed with chemicals (bleach, jo-max). After cleaning you can still see mold/mildew stains under the paint. The mold/mildew return within a few months after the cleaning.

Any ideas on how to clean/kill what we believe is mold/mildew under the outermost surface of paint?

The paint manufacturer has recommended that we try cleaning again, priming with oil based primer and repainting.

The painter is recommending replacing the siding and trim.



01:15PM | 11/12/02
Member Since: 07/28/02
1356 lifetime posts
If the midew is under the paint it is difficult to fight that, you may to see if you can find a product from olympic called Mildew Check. This product is different from other products as it leaves a protective barrier to keep the mildew from coming back and even though you do not have to paint over it it will last longer if you paint over it. Also stay away from oil based products on your house as they just give more food for the mildew to grow on.


08:59AM | 11/13/02
Member Since: 10/15/02
359 lifetime posts
Have you tried KILZ? I had a similiar problem with posts that got moldy and the shellac based Kilz seemed to work pretty good, and the top coat of paint stayed clean, that was until the mold came back, but that is another story not related to the paint. It washed off clean and once I solved the problem with what was causing the mold, it never returned.


12:30AM | 11/15/02
Member Since: 07/28/02
1356 lifetime posts
Do not use KILZ outside as it will peel because it is to brittle. Also it is not a solution for mildew. I do not know why people think that KILZ is cure all as it is just a primer for holding back water stains and smoke damage and the such.


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