We are researching a shower rebuild and had a contractor out today who (unexpectedly) also does work with a material from The Onyx Collection. It’s a groutless man made stone material that you make a pan and walls out of. From their site:

63% of our products is a hydrate crystal--Al2O3+3H2O. Alumina is also the main ingredient in Corian and all "solid surface" products.The main ingredient in our product is (alumina trihydrate). Our other 37% is a special polyester resin we developed over the last 30 plus years. Our resin does not contain any urea formaldehyde.

Does anyone have experience with this? What are the cons?

Cost came in line with tile from another contractor but $4k less than tile from the same contractor. Their pitch was “more expensive material, but saves on installation.”

My wife was sold immediately on the “no grout.” I’m weary of getting too smart with the shower and going with an unknown exotic product. But I’m not finding much negative on Google.

Plan is to be in our home for the long haul, so resale is less of a concern.

Thanks!