[Bobbo]

I apply a mixture of house wash / mildew killer with a 2 gallon masonry & wood sprayer that I get from Home Depot for about $20 . I apply it at close range to keep over spray to a minimum as well as wetting the surrounding areas down before and after the power washing process . I've never had any problem with this method for over 20 years now

 

[Roof Cleaning]

Nice

You know what also works great for shooting bleach?

Get an old soda syrup container. You can fill it with bleach and they are set up to be pressurized with air. You know the ones that are behind the bar that use carbonation mix??

I helped out a good friend one time on a project that was a little too much for him and was so impressed with his DIY system. I think the cylinder he had held about 8 gallons? Shot great also! He had about a 15 foot braided line on it. He had a few of them set up and used a small compressor to fill them.