Cleaning a sandstone fireplace ?

4 Replies

Any recommendations on cleaing this sandstone fireplace.

I figured I'd hit BP up before trying sulfuric acid and all the safety gear required to do that.

Hey Tom,

Acid isn't really a great idea anyway, you're more eating away the stone that is dirty than cleaning it. There are several PH balanced products out there for cleaning sandstone, I have used Silque and StoneTech products before and both worked fairly well. You can use it with a microfiber cloth to work the solution into the stone, and rinse with warm water. The worst part is it just takes time and elbow grease, it's not a job you can do quickly, and I hope you have strong hands because it will be an intensive workout for them. 

Adam

@Adam Hershman

I will check those out. I guess this is why I see so many folks painting these things but I want to at least give cleaning a try. Thanks !

I think its muratic acid , not sulfuric acid  ( its been a while)  sulfuric acid is battery acid .  Try some vinegar on a small spot  , its acidic .

I would not use an acid or any other harmful chemicals on it.

If it were me I would tape/tarp/seal off the walls and floor and create a tarp-trough there in front of the hearty to contain any runoff water.  Use a small utility pump - or a friend with s shop van - to keep the water accumulation on the tarp down to a minimum.  Put a big exhaust fan in the nearest window.  Spray the stone down with a mild cleaner like Simple Green and let it sit for a few minutes.  Then I'd go over the stone with a small pressure washer.  1000-1500 lbs or so.

The prep will take two hours to set up properly and the cleaning will take ten minutes. <g>

Then I'd clear out all the water and set the former exhaust fan to blow directly onto the fireplace.  When it looked dry I would and start a couple dehumidifiers running in the room for a day or two.

It will probably clean up perfectly but if it doesn't, hey;  look at the bright side - at least it will be well prepped for painting. <g>

stephen
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 Originally posted by Account Closed:

Any recommendations on cleaing this sandstone fireplace.

I figured I'd hit BP up before trying sulfuric acid and all the safety gear required to do that.

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