We built a house 2 years ago and the outside is Hardie Board with red paint from Sherwin Williams. We have a horrible pollen problem here in the spring and right now you can see a white film all over the house. Last year I tried pressure washing the siding, but after it dried, you could still see the white film. I tried cleaning a few boards with a scrub brush and that took care of the problem, but I did not have time to finish it in that manner. I would rather not scrub this entire house with a scrub brush. It doesn't even sound realistic when I say it out loud.
My question is, does anyone know of a better way to do this? Or do I just need to get out the scrub brush and get to work?