Plumber is having a problem installing our new Unichrome Triton Tyne Mixer shower. He says that the problem is because the wall which the mixer controls (and behind them the water pipes) are going into is too thick - about 4". He says that the shower is designed to go into thinner walls and the manual does make reference to "maximum thickness of wall is about 20mm". But this is less than an inch!
Surely there must be a way of installing the mixer controls and connecting to the pipes through a wall thickness greater than 20mm?
Anyone have any ideas or similar problem that they managed to solve?
The manual also refers to an optional "Bar bracket" - would this assist in installing the shower?
Cheers