What's the difference between using a "sheetrock" type backerboard and a concrete board?

Question

If I'm tiling over a plywood sub floor or even a tub surround, does it matter if I use a concrete board or a fiber board like Fiberock?

Answer 1

the strength is the difference

Answer 2

You should use the concrete board, its durarock. It handles moister 100% better and your remodel will last a long long time. If you use fiber board (key word fiber), fibers get wet, which = mold and rotting. Hope I helped you out!

Answer 3

I would have to disagree. The fiber in fiberock or hardibacker is fiberglas. I find these easier to work with than durock which tends to crumble. All are designed for use as you are intending.

Hope that helps.

Answer 4

The rock board is made to be used under tile. Use the concrete board it will save you a lot of trouble later.

Answer 5

Concrete board doesn't hold moisture, so it should be used anywhere that it may come into contact with water, such as behind a tile shower surround (as opposed to behind a one-piece acrylic surround).  Frankly, anytime you are tiling in a wet area, the concrete backer board is best, but the ease of using the other types sometimes outweighs the durability of concrete.

Answer 6

You will want to use durarock. I used it in my shower area and it holds up alot better. You dont want a board that will hold moisture. Use hardibacker it will save you time and trouble in the long run. Good luck and have fun.