The floor of my newly bought 20 yr old Corian shower stall is not even, and after using the shower, the water pools up on one end. Two questions:

Q 1- Is there any way to solve this problem short of replacing the stall?

Through the years, this resulted in black mold stains which I have not been able to eliminate even after using various suggested methods calling for Hydrogen Peroxide/ Vinegar/Clorax and a stiff brush.

Q 2- Is there another way to eliminate the stain or something to cover up the stain that will stick on the Corian?

Any help much appreciated,

Jayne

Depends on how the base was set and how it was attached to the walls. The base must be raise at the low end with shims and thinset but that may not be possible without disturbing the wall.

How deep does the water pool on the low end? Do you know or can you guess how thick the Corian floor is?

Any home you have will be uneven, even if you build new. Walls won't be even, floors won't be even. Once a house settles, it shifts and all the work the contractors did to make it even, is for naught, and sadly, when the home was built it wasn't even. Impossible to do.

You're talking about a 20 year old home. Even if the best builders built this house, shifting happens, and now it's not even close to even. It is what it is. You're not alone. Every home owner has dealt with shifting and not having even anything, walls, floors, and more. It's the nature of the beast.

You're now dealing with an uneven floor in the shower. That's the norm for any home.

You have to find a way to drain the water that pools. It's a shower, so there should be a drain, so you need to find a way to get the water that pools on one end, to drain into the drain. You need to lift the area where it pools to direct it to the drain.

If you can't afford to demolish the stall, which I totally get, it's not cheap, then you have to find a way to direct the water to the drain. That means elevating the area where the water is pooling. That means hiring a contractor that can do the job, or doing it yourself if you're able. But it won't be pretty, it won't match what you have now. It's adding to what you have.

It's a short fix, but a fix nonetheless. The better long term fix is demolishing the shower and fixing it so it drains properly, and it won't be cheap.

I feel for you. Not a cheap fix either way. How handy are you? I could do it myself, but could you? Even doing it myself, it wouldn't be cheap.

So sorry. This is not an easy do it yourself project. :(