I think where I should clarify is that nearly everything I wash is hardiboard and stucco. Given that it’s not vinyl do you think it’s apples and oranges on the procedure and outcome?
No, it’s not apples to oranges. You are washing incorrectly and spreading that advice to others.
In my experience, the sheen of paint is way more important than color. With flat paint you have to be very careful. The glossier the finish, the less you have to worry. Reason being, flat paint absorbs moisture, glossy finishes repel it. Always test though. We wash a ton of hardie on high end homes.
1 Like
I know that I have not near the experience you do, and that this forum is your child, so I will leave my personal success out of it. I have not had any issues in cleaning probably close to 100 houses with no growth this way. There is more than one way to do things but if your business can afford to walk away from every third job because it won’t work the way you want to do it then that’s fine. I’m sure a lot of guys on here don’t have the luxury of skipping many jobs because the the only way they have been taught on here won’t work for them. Or I could be wrong. Maybe the houses in your neck of the woods can’t handle 1000 psi because the humidity has rotted the paint out. Lots of variables to consider. Guys if attempting to use my method maybe only do it if you live in California or some other non-humid area. That or do a test spot. I haven’t washed outside of my environment so I can’t speak on what will work where you are…
2 Likes
Would using a hydrogen peroxide/oxy product avoid this problem?
No, it would make it worse and bring on other complications
