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Discussion Starter #1
We removed some VCT tile and planning on installing some VLT tiles do we have to remove the old adhesive residue?
 

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Discussion Starter #3
The old one I am not sure. The tile was installed back in the late '90s. When we remove the old tile it left a black residue. On the new tile we using Armstrong s280, or Henry 430. The subfloor is cement in a basement.
 

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Discussion Starter #6
Thank you everyone for all your help.
In your opinion how thick the skim coat be? Keeping in mine that the floor is nice and level and only applying the skim coat to cover the adhesive.
 

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The adhesive has asbestos in it. Skim it with Ardex and don't grind it!
Unless it is tested you don't know that, especially if tile was installed in the 90s

Adhesive containing asbestos was last sold in 1984, not all had asbestos and there were some in the 90s that were black with no asbestos.
 

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I'm with RRK. Very unlikely it has asbestos if he's confident it was installed in the 90's. Nobody was holding onto inventory of the old stuff for 6+ years.
After 6+ years it would have been hard as a rock in the bucket
 
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