Had a shower room makeover last year and this morning the waste couldn’t cope with the pumped water supply and the tray was almost full when I finished my shower. The same happened when my wife had her shower so she took the chrome cap off the waste and lifted out the small cup below. The water then drained away quickly. The tray is 1500 x 800mm with the shower head on one side and the waste on the other. Any ideas?

