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  1. M

    Can I use a penetrating sealant on concrete if there is black mastic on top of the slab?

    Hey everyone, I had a question about sealing my concrete slab before laying down flooring. I live in a very humid area and my building was built in the 60s, so they did not install a vapor barrier under the concrete slab subfloor. I get a lot of moisture coming up from the concrete so I wanted...
  2. M

    Vinyl Plank help over asbestos and moisture

    Hey everyone! I need some help on how to handle asbestos (non friable black mastic) and a lot of moisture on my concrete slab. I have attached a photo but recently my hardwoods were torn up leaving me with an exposed concrete slab that had asbestos on it. I do not want to pay to abate the...
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