Thanks bobasd. The diagram / instructions were relatively poor. The instructions were so generic that they talked about making a good seal between the tap and the bath. Certainly no tolerances mentioned.
It's a standalone thing. Just two valves and the spout, though I don't particularly have an issue building the reuiqred pipework. The shower will come off the same pipework, just higher up in the wall, but it's the same design as I fitted in my old bathroom (and as you described) with in-built compression fittings onto 15mm copper stubs left sticking out the wall. So a complete breeze in comparison and a spout like that does sound like a really good option.
I guess I'm struggling to understand the benefit of it being designed like that. I get that it can be done, but with a whole house to renovate I'm looking for wasy to de-risk/simplify/speed up everything as much as possible and it just seems like a design like you described is just more efficient.
It's a standalone thing. Just two valves and the spout, though I don't particularly have an issue building the reuiqred pipework. The shower will come off the same pipework, just higher up in the wall, but it's the same design as I fitted in my old bathroom (and as you described) with in-built compression fittings onto 15mm copper stubs left sticking out the wall. So a complete breeze in comparison and a spout like that does sound like a really good option.
I guess I'm struggling to understand the benefit of it being designed like that. I get that it can be done, but with a whole house to renovate I'm looking for wasy to de-risk/simplify/speed up everything as much as possible and it just seems like a design like you described is just more efficient.
