I repairing some grout in my shower. I'm going to have to do some repair of the tile on a window sill, but I don't want to have to remove any more tile than necessary. Here's my questions.
1) What's the best product to put under tile in a window sill that is in a shower? When I took the tile off the sill, I found some drywall and some spackle and I don't think that's the best product to have under there.
2) After I took off the window sill tiles, I noticed that some of the tile on the wall leading down from the sill was not fully attached. The grout on the tile is fine, and I don't want to remove more tile. Is there an adhesive that I can squirt down behind the tile to re-adhere the tile to the wall?