I've been shooting in my living ropom for the past five years and found that the best way to preserve my seamless paper is to use two 4x8 foot white tile boards on top of my carpet (available from Lowes or Home Depot for about $20). It's extremely durable (I've used the same boards for five years) ... and when I'm not shooting with the seamless paper covering it, I leave it on the and it adds some reflective light to my shots. It works SO well, that I'm still using some of the same seamless paper I bought 20 years ago!
Here's a shot where everything came from Home Depot. I used the reflectivity of the white tile boards under the model to provide some reflection for this shot ... and I used a roll of cheap silver covered insulation as a backdrop.