bathtubrepairstone
We have a terrazzo stone bath tub that has a crack that leaks. We love this bath and would love to find a way to fix it as it’s nothing we’ve seen before.
It has a stain on the bottom of it and the crack follows the outline of the stain. Any advice would be greatly appreciated.
Your tub has an overflow drain. You just have to find it. Remove the two screws next to the combination drain toggle & overflow plate. Now gently pull up to reveal the overflow hole and the drain plug:
Get out your snake (you've got a snake, right?) and thread it down the newly revealed hole. Also remove the single screw holding the drain screen. Use some sort of semi-flexible plastic rod to clean out the horizontal section of the drain (a suitable tool comes with some bottles of drain cleaner, else you can improvise).
Don't bother with drain cleaner -- it is not right for your situation.
You need to buy something to break up the rust fusion you have going on. WD-40 makes a variety but there are many at your local DIY center.
I would then tap around the drain. Then get a blunt/dull metal block or chisel and hold it against the inner straps and tap on those counter-clockwise. The tapping (with a hammer or mallet) is probably the key to breaking up the rust bond. You can't just start cracking it hard or you could snap one of the center straps or warp the outside.
Best Answer
I'm not an expert in this material, but here's my first inclination.