Thinset over carpet glue?

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  #1  
Old 06-04-07, 03:00 PM
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Unhappy Thinset over carpet glue?

Our sunroom has indoor/outdoor carpet glued directly to concrete. After ripping out the carpet there is a complete layer of glue left on the concrete that is at least 1/8 in thick covering the concrete. Must have been glued a few times beforehand we guess and never cleaned. A local flooring "friend" said that it would be near impossible to remove all of the glue even with acid and a scraper. So is it possible to apply thinset over the glue then a new subfloor like hardiboard? Or can a floating floor of some sort be used with just an overlayment? Any help is greatly appreciated.
 
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Old 06-06-07, 04:42 AM
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Welcome to the forums! You didn't say what type flooring you will eventually install. Of course scraping the glue off it the best method. Using new cbu is fine, but how will you attach it to the concrete?
 
  #3  
Old 06-08-07, 05:06 AM
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Dad or oops paint stripper are good, make sure you have the windows open for ventilation befor using these products.

You could also hire a power floor sander (Drum type) and use a 60 grit papper to sand the remaining glue that the oops or Dad didnt get up then wash the floor down with soap and hot water that should get you set.

I presume you going to tile Hence the thinset, will bond tile over the glue, but you will not beable to get a smooth, layer down and you will end up with air pockets under the tile, which will result in tiles cracking.
 
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