[dalucca2003]

I am thinking plywood or some kind of board needs to be layed down so the furring strips can be attached? Kind of like a regular house, at least here in my area. So the other question I had is whether or not the furring strips can be screwed and provide the proper support on the cement board?

If I do go with the plywood, I was going to lay down the black paper in order to provide an additional barrier.