Yeah, I guess I could build the wall directly on to the joists, and then butt the floor up to the wall. But that would only work where the joists run ...

Thanks @Nailbag and @EricL I fear I have confused things a bit by not providing all relevant information in the first place! I want to build the ...

Ah right! I hadn't thought of it that way! That would save the need for all the fixings to the wall wouldn't it?! However, I currently have no floor ...

Thanks @MitchellMc My question about fixings was about fixing the batttens to a brick wall. Given the 90mm depth (minus 10mm countersink), I though ...

Thanks @JacobZ I intend to box out the wall by 90mm to allow space for plumbing and waste and electric. I'm fixing to a brick wall with plaster fin ...

@Nailbag I also meant to ask, do you have more photo's or a thread that documents your shower base contruction? It looks like you screed your base, ...

Thanks so much @Nailbag ! Your joists are a fair bit deeper than mine! So I imagine it may not be an option for me...! My joists are only 90x45, and ...