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| Q: Advertisements have been painted on rocks scattered in a fragile ecosystem. What are the possible options for removal of these paints (enamel, lead-based, snowcem)? Some of the options we came across are:
Will you kindly provide your expert comments on these options? If you feel any other option is also available please let us know. A cost indication will also be highly appreciative. A: I'm not familiar with the soy-gel that you mentioned in your email; however, there are some paint removers that are environmental friendly, but I have no idea how they will perform on rocks, or if they will in any way mark or stain the rocks. You will need to test them yourself to make that determination? A common, very effective paint remover is methylene chloride, but this is NOT environmentally friendly, so you might not want to use it. A paint remover that apparently works well and is somewhat environmentally friendly is NMP (normal methyl pyrrolidone). The following website will give you the information you require on this type of product. In the US, the Air Force often uses it to strip the paints from aircraft. Other alternatives are to abrasive blast the rocks with glass beads, or to blast the rocks with high pressure water to which you add bicarbonate of soda. There are companies that sell both the equipment and the bicarb for this specific purpose. You will find an abundance of literature on the Internet on paint removal. I went to Google and entered "paint removal stripper depaint" and a host of sites came up. When you find a solution to your problem ,will you please write back to me so that I can know what worked for you?
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© 2008 - Ron Joseph, Paint Consultant in Saratoga, California |
