Take care to use the least-aggressive cleaner as it's easy to leave a bleached area otherwise. And that a new carpet (only a year or two old) still looks pretty clean. Textile Research Journal 38, no. Really? keep us posted. And the HVAC filter was absolutely black when we changed it shortly after moving in. "Carpet cleaning and maintenance." We describe mold stains on carpeting and also other sources of carpet stains that may otherwise be hard to diagnose. This is a good sign that your carpet underlay needs to be replaced. This is a good sign that your carpet underlay needs to be replaced. It can be made from different materials, primarily recycled foam. hardware outlets) and disposable overalls if you are intending to remove old carpet let me know what you see, and we'll take it from there. But both that and the rubber waffle would flatten out and become a flat layer of a clay like deposit. The shot stinks but your advice is spot on. A stash of beautiful cinema posters dating from the 1930s and 40s that were used as a makeshift carpet underlay have sold at auction for 72,000. Buying the Best Carpet & Carpet Underlay | John Lewis & Partners We do not sell anything. I've run into it many times. We had been renting for several months when we first moved to a new area. Not without more investigation. It appears to just be part of the old padding or rubber backing stuck to the subfloor. We also have a fireplace in the exact room. That doesn't mean they didn't get their old carpet wet. Found black foam material under carpet I'm replacing, Removing old carpet from steps, glue removal, Help - Questions about chemicals in vinyl install - foul odor and health problems - Global Gem Flooring. believed to have been installed prior to 1970 in Perth homes. Do I have mold? Vacuum any debris or loose dirt from the underlay. 1. Lori,Particularly because you're considering replacing the carpet with wood flooring, there is nothing to lose and everything to gain by pulling up the carpet in a corner where these stains occur. First off it is mud like. What Is The Black Stuff Under The Carpet Pad? Use pliers to grab the carpet and pull it away from the subfloor. This will provide protection against inhaling dust and