Here are My Top 2 cleaners for exterior cleaning.
For Cleaning windows, use ..... Sprayaway.
It foams as it works and does not contain any CFC's. Car detailers use it for interior car windows. It does not leave streaks ever!
If you need to remove dried latex paint, use any cheap blue glass cleaner that contains ammonia. it will soften the paint and use a brand new flat razor blade, or window razor to remove the paint and embedded grime.
For Cleaning the oxidation off gutters and downspouts,
use...... KRUD KUTTER.
hands down the best cleaner for aluminum and pvc. Just spray, and wipe with a shop towel, or painters rag, sponge, etc.
Also dont forget clorox outdoor. It has 12% Sodium Hydroxide. The main ingredient in Bleach. It is super strong so read the label for dilution ratios and mixing directions. Guaranteed to kill and mold, mildew, viruses, bacteria, and alergens.