No, I have never had that issue. Especially with low moisture you shouldn't run into that problem at all. I used to clean thicker rugs on site when I did HWE even with no issues. On thinner rugs I did put plastic under the rugs first with HWE. No need now though with low moisture method. Go to the paint department of Menards, Home Depot, or Lowes and you can buy rolls of plastic for a decent price. Just cut them to length as needed. Hope this helps. kzfaq.info/get/bejne/l89dY6yV3sfHqp8.html Here is an old video where I used plastic under a rug when I did HWE

Very Low Moisture