I'm remodeling a shower with a tiled cement base -- including removal of that base. It's approx. 32" x 30" x 2" (thinner in the middle where the drain is). How much would it weigh? Is it better to try to remove it in one piece? Is that likely to leave the membrane intact? -- not that it should be needed under a one-piece base, but it wouldn't hurt to use it anyway if its still OK.
Perce