Will SH Harm or Stain Brick?

[Ikii]

@Innocentbystander

I don’t think I’ve lost money in the last 15 years.

I will reword

There is a lot of money to make on washing chemmeys

[MrSparkleVA]

@bluewave18ft

Im hitting the brick with about 2% SH after dilution

I use my roof mix (4%) on foundations and steps. 1 part SH 12.5% to 2 parts water. Often takes several treatments while cleaning the rest of the house.