Securing a Grohe rough-in box (retrofit)

[cjr]

The time has come for a proper mixing valve in our shower. Have a look at this snapshot - do I dare put screws into this shower wall to mount the box, or do I need to jury-rig something on the back side of it? (Grohe's Universal Rough-in Box seems to be designed for mounting to either the front face or the rear, not top or bottom.)

Of course, there is a smitty plate in our future too...

Thanks all.

 

[Bob Y.]

The time has come for a proper mixing valve in our shower. Have a look at this snapshot - do I dare put screws into this shower wall to mount the box, or do I need to jury-rig something on the back side of it? (Grohe's Universal Rough-in Box seems to be designed for mounting to either the front face or the rear, not top or bottom.)

Of course, there is a smitty plate in our future too...

Thanks all.

View attachment 59566

Hello,

Please use wall mollies and copper or plastic

The time has come for a proper mixing valve in our shower. Have a look at this snapshot - do I dare put screws into this shower wall to mount the box, or do I need to jury-rig something on the back side of it? (Grohe's Universal Rough-in Box seems to be designed for mounting to either the front face or the rear, not top or bottom.)

Of course, there is a smitty plate in our future too...

Thanks all.

View attachment 59566

 

[Sponsor]

 

[Bob Y.]

Hello,

Please use wall mollies and copper or plastic U-clamps around the hot and cold water pipes, two clamps per pipe. This should hold the pipes in place.

Bob

 

[Terry]

I've done these before. Not a three handle valve though.