I have heard that mold growing on the north side of a house is due (in part) because of the added moisture and lack of sunlight. I get tired of cleaning our siding and there is plenty high enough that it becomes very difficult to clean.
We have a fence about 40 feet behind our house and I had the thought of placing a large convex mirror (like the ones you see in the corner of stores) on the fence and position it so that it reflects sunlight onto the house. My thought is that this might help deter or prevent the mold from growing due to the introduction of sunlight.
Is this crazy talk? Deluded ranting of a desperate home owner?
Let me know what you think. Let me know if you have any references to literature which addresses this.