In the process of redoing our bathroom. We put in a brand new bath/shower faucet. When we turn on the water it comes out of both the shower head and the bath spout. It is a single handle model. This is the 3rd model and 2nd brand of faucet we have tried and all do the same. Can any one help figure out why. We have followedthe fdirections that came with all the faucets step by step and the same thing still happens.

What is the length of the shower riser?

Figured it out. It was a water pressure issue. The hose from the controller to the bath sput had to be larger. That fixed it.
Thanks