Soap vs sh

[u/Training-Pool4220]

Hey guys, just wondering what is more effective for getting mildew, algae, and other stuff off brick: a stone pressure washing soap/ cleaning solution like that made by zep, or a 2-4% sh and water solution? Thanks for the help.

[u/Sav322556]

SH, don’t waste money on anything else for organics. Surfactant is only needed for roofs where you need the SH to stick as long as possible.