Lifespeed
Member
I am in the middle of a re-pipe. All is going well so far, but the rocket scientists who installed the shower cut a rather large horizontal oval hole for the old shower valve. The new Toto valve and trim plate is narrower, so the gasket under the trim plate won't quite seal because the oval hole is too wide. I need to make the hole in the cultured marble narrower. Yes, I know it is much more difficult to decrease the size of a hole compared to enlarging it.
Is there some sort of durable material that is compatible with synthetic marble that I can use to build up the edges of the hole against a flat plate "mold" so that I end up with a hole that is not quite so wide, and a good solid flat sealing surface for the trim plate? I really don't want to just squirt some silicone or caulk in there, as we know that is never a long term fix. I believe the factory Toto foam rubber gasket is the way to go, I just need a good surface for it to seal against.
Epoxy resin with fiberglass is one thing that came to mind, but that is a bit thin for this type of work. I probably need something with body too it to hold it's shape while it cures on this vertical surface.
Any ideas or experiences?
Is there some sort of durable material that is compatible with synthetic marble that I can use to build up the edges of the hole against a flat plate "mold" so that I end up with a hole that is not quite so wide, and a good solid flat sealing surface for the trim plate? I really don't want to just squirt some silicone or caulk in there, as we know that is never a long term fix. I believe the factory Toto foam rubber gasket is the way to go, I just need a good surface for it to seal against.
Epoxy resin with fiberglass is one thing that came to mind, but that is a bit thin for this type of work. I probably need something with body too it to hold it's shape while it cures on this vertical surface.
Any ideas or experiences?