I am tiling a backsplash.

Question

Is the backerboard necessary, or can I adhere the tile to the drywall behind the sink?

Answer 1

it is needed to support the weight of the tile.  

Answer 2

If your drywall is waterproof green board you can tile over it providing you have a good clean surface to adhere to.Make sure you seal the grout to prevent water damage.    

Answer 3

you can adhere it directly to the drywall.

Answer 4

  Right to the drywall is fine.. A type 2 mastic is best bet ( It resist s water a bit more.). You won t be getting that much water on the  bs to worry about, at least I assume not  lol.. Even w/ kids and normal washing of dishes you shouldn t  The dry wall should be at least primed to accept a mastic or any other tile glue..

Answer 5

You can adhere the tile to the drywall. Just use a good mastic. I have done it several times.