We are having hardwood flooring put in. We will be removing 33 yr old wool carpet which looks to be in pretty good shape. I was thinking of having an 8'x10' section cut out and bound for area rug in the same room. When I looked underneath, the backing is really brown and crinkly like old newspaper. It is very hard to bend but feels like if it was rolled up or bent much it would flake and disintegrate. I know wool can last indefinitely, but could the backing shorten its longevity?