shower pl8 before or after tileboard?

[Ouch77]

putting a shower up against an existing brick wall - wall has been chased for pipes already, and I'm intending to fit a shower PL8 to ensure spacing.
I'm wondering if I can fit it directly to the brick, rather than to the tile-backer- this will help with aligning the top of the pipework and ensure the pipes are properly perpendicular to the wall before the tile backer board goes up.

Will this set the outlet connections too deep? is there a maximum thickness of covering that can go over the top of the pl8?

 

[DAZB]

This version accomodates 50mm to 90mm of space so may be enough for the depth you need.... pricey but other options are out there,

Bristan Recessed Wall Mount Fixing Kit | Online At Victorian Plumbing

The Bristan Recessed Wall Mount Fixing Kit is designed to ensure a secure fitting is achieved. Now in stock online at Victorian Plumbing.co.uk.

www.victorianplumbing.co.uk

 

[Madrab]

A shower fixing plate can be secured to any wall surface, be it brick, board, stud work etc. The depth is defined by the length of the tails through the plate and then the wall covering, which can really be any length, so in effect it can be as deep as you want. Not too deep though as you still want rigidity to the pipe work.

https://www.marflow.co.uk/wp-content/uploads/2022/08/Marflow-Shower-PL8-Fixing-Kit-Installation-Guide.pdf