Go back and soap and rinse with a light mix. Very little SH and a drop of soap. Rinse the crap out of it. The streaks will still be there but look better. Let the house dry for at least a week before you go back. It will go away. Some siding takes forever to look dry. Also, never clean that house again because it will do it every year. It’s happened to me several times. Recently was this summer. There are a lot of threads on it from this summer.
