I am planing to install a new tub surround. its a glue to stud type..... my concern is that its pretty flexible and if someone fell they may pop a hole threw the surround wall between studs.
looks like I would be able to cut 1/8 ply a few inches smaller then the edges of the surround. I would screw this to the studs then glue the surround to the sheet of ply to better support it. the edges of the surround would still mount down around the flange as its pretty flexible and I have some shimming room.
its a surround so in theory no water should get behind it and it will be caulked at all seems. is this a good or bad idea?
If it is designed to mount directly to the stud, it is strong enough as is. Nothing else needed unless the directions say otherwise. If you are not happy with that, add some horizontal 2x4's between the studs.