What is your surface (tile, vinyl, etc.)?
Try a slurry of baking soda and hydrogen peroxide. Scrub with a stiff brush.
Hi this is Peggy. Sorry you burned your floor with your steam mop. I don't really see the burn mark, but I hope this helps. How do you clean a burnt floor?
Surface Scorch Marks
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Hi Rosema, hope this helps you
Start gently with baking soda and hydrogen preoxide, it maybe enough to bleach it out.
I would make a paste with baking soda, vinegar and dish soap. Apply to the mark and let sit for a while and then try cleaning with a brush. I use this mixture all the time for stains but have watch it carefully because it does bleach things.
I don’t think it’s burn marks it yellowed from the heat
Burned or heat/yellowed, it’s chemically changed into the runner itself.
This requires a “donor piece” and if you don’t have one that’s this old, then evaluate where you can pull one up and replace this.
I’ve had to do this with sheet vinyl.
A brand new one will not be the same color, as all resilient flooring naturally ages in-place, although it’s much more subtle than e can notice.