pre-finished hardwood floors/-rubber-like back of area rug stuck
We have Bruce ¾ inch pre-finished hardwood floors in a dining room. We have a sea grass (similar to sisal) area rug on top of the hardwood and it had sort of a rubber backing. We just moved the rug and much of the rubber backing is stuck to the polyurethane hardwood flooring. The rubber backing on the rug has become brittle and dried out and much has come off the rug and melded to the floor. Water does not dissolve it or break it up nor do regular cleaners.
This substance is sort of soft/rubbery (not a liquid though) when wet. Although when dry it is rather brittle and it comes off the floor when scrapped with a plastic scraper. But since it is such a large area it is tedious. Also, even when the large pieces come off, there is a film and tiny pieces remain. It is stuck down pretty good—a sponge and warm water or general cleaners isn’t cutting it. I did buy a decent hardwood cleaner but not much help as I don’t think those really have anything special in them in them except for general cleaning
Does anyone have a suggestion as to what to use to try to dissolve or loosen this rubber backing/glue-like substance? The finish on the floor is fine in that it still is very shiny and there are no worn spots. But, I am concerned about using certain solvents as I only need to dissolve the rug backing (rubber/glue-like) and do not want to dissolve the polyurethane or urethane finish on the floor. I say polyurethane or urethane as I am unsure what Bruce uses. The floor was installed about 6 years ago and is the standard ¾ inch gunstock color you can get at any Home Depot or Lowe’s.
Internet searches have turned up WD-40, vegetable oil, vinegar and water--all no good. I have some extra pieces and I tested the finish with acetone and it did not affcet the finish. But, the acetone did little if anything to break up this substance. Also, AFTA (which I understand is a drycleaning fluid) did little as well. If acetone is not effcetive, is there any chance mineral spirits would work? What about denatured alcohol?
Any other suggestions and comments are appreciated. Thanks.
Johns Creek, GA