I have a 10year old house with orginal aluminium siding. On the north side my neighbor has tall bushes and I keep getting mildew. I power wash it off but other than getting rid of the bushes is there a was to prevent it from coming back ?
If you are friends with your neighbor, you could politely ask them to cut part of the bushes that comes your house. It would be most effective to cut the cause of your problems and that is the tree.
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