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by chasbotfield
Tue Aug 16, 2016 6:10 pm
Forum: Barn Conversions Forum
Topic: What Chemicals Used for Stone Wall Cleaning
Replies: 2
Views: 4806

What Chemicals Used for Stone Wall Cleaning

I have 3 stone buildings in France. Recently I have been visited by a couple of "traders" offering wall cleaning services. I don't especially trust unsolicited callers but let one of these spray a small part of a wall with a chemical. This stuff was magic. Within 30 seconds the sandstone f...
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