A.Paul Fisette responds: It's important to correctly identify the source of the problem before you try to remove the mold contamination. Certainly evaporation from the lake elevates the humidity of the air surrounding your home and likely adds to your mold problem. But there are probably other contributing factors.

In an "ideal" attic design, the air in the attic should be completely isolated from the conditioned air of the home. As a result, the temperature and humidity of the attic space would be very close to ambient outdoor conditions. If you have mold on the attic sheathing, you would then also typically find mold on the outside of the home.

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