Brick cleaners

[Ctwoodtick]

i have been look to clean off the brick of the face of my masonry chimney. I now have insert in fireplace. There some old soot from use of old fireplace. Are masonry cleaners generally gently on the steel and cast iron of the insert in the event that some of the cleaner gets on insert or surround?

 

[Kevin Weis]

The cleaners generally are an acid. So yes, they would attack the metal as well especially if left on there for any length of time. Also would attack mortar joints. Acid and a base you know. Basic chemistry. Kevin

 

[double-d]

Here is a product that is out on the market, that you might take a look at.
ChimneySaver Paint "N" Peel Fireplace Cleaner is a revolutionary new kind of cleaner that represents a major breakthrough in the removal of smoke and soot stains from fireplace fronts and hearths. It's applied like a thick coat of paint, and as it dries, its wicking action draws out and removes deeply embedded stains. 1.5 gallon bucket.
https://www.rockfordchimneysupply.com/chimney-cleaners-tools