Still working on the vinyl flooring issue.
I understand that vinyl flooring can be laid directly onto concrete, provided there is no moisture problem. Further, I understand that any reputable installer will know how to test for moisture.
I also understand that new vinyl can be installed on top of old vinyl or tiles, provided the surface is smooth.
I spoke with an individual at Lowe's on Saturday, who said they could have someone come out and give me an estimate, and that sometimes new underlayment is required. They subcontract the underlayment.
My question is, under what conditions OTHER THAN MOISTURE or ROUGH SURFACE, would I be required to install NEW underlayment?
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