Getting Old Mortar Off Stone

 
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Old 01-30-2009, 09:40 PM   #1
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Getting Old Mortar Off Stone


Customer wants us to clean up a large natural stone fireplace that has lots of mortar smears on it. The stone appears to be slate or linestone(see photo). Vana Trol has been recommended, but in reading the specs, it says should be used within 14-21 days of installation and using it on old work could harm stone.

Would appreciate any suggestions for safe cleaning.


Getting old mortar off stone-stone-fireplace-crowell.jpg
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Old 01-31-2009, 08:33 AM   #2
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Re: Getting Old Mortar Off Stone


Vanatrol or 600 Detergent are for new construction (vanatrol would not be the proper one for that mortar/stone anyway). I don't know of any method of cleaning old mortar from stone other than mechanically. As a rule, the old mortar is going to be harder than the stone, so this will affect the stone finish in the process.

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Old 01-31-2009, 02:48 PM   #3
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Re: Getting Old Mortar Off Stone


I would go to the web site for PROSOCO. They offer many different cleaning agents for new and old work. If you are having trouble figuring out which would be best, call them. They are very helpful and your local masonry supply house might have the product in stock, if not they can order it.
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Old 01-31-2009, 07:52 PM   #4
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Re: Getting Old Mortar Off Stone


Quote:
Originally Posted by JAD View Post
Would appreciate any suggestions for safe cleaning.


Attachment 14671

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Old 01-31-2009, 08:01 PM   #5
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Re: Getting Old Mortar Off Stone


That thing is sorta scary looking...
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Old 01-31-2009, 08:11 PM   #6
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Re: Getting Old Mortar Off Stone


Give Cathedral Stone a try. Awesome products better service. I would give em a shot.

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