MikeAqua:
AlphaAlfalfaSprout:
Modern acrylic showers are far safer than tiled.
Definitely safer then tiles. Fugly, though. I've yet to see one that I like. I'll never buy a house with shower tiles over a wooden floor again, if I can help it. I'd happily build that way, because I can ensure it's done correctly.
Showerwell has a nice system for this. It uses a moulded base with plastic sheets on the wall. You tile over the whole lot.
You get the tile look but avoid relying on membranes or silicone. It works very well, we used it on a bathroom renovation 10+ years ago.
