CarlD - plumber's whatsit under steps?

Carl, some long while ago you mentioned something for under the steps in an AGP. Plumber's vinyl? Plumber's mat? Plumber's something . . . and I can't remember.

We have to relocate the steps due to the washout directly next to their original location. The old Yoga mat I had been using is pretty ratty now, after all these years, and I'd like to replace it. What is the material you mentioned?

Shower Pan Liner. It's 40mil thick soft PVC. Usually on a reel in the tile section of your favorite Big Box Home improvement store. It's gray and printed on one side.

Thanks! I had sent an e-mail to Carl and yes, that's the product. He called it Plumber's Vinyl. I'm off to the store.