Tile installation: Does sheetrock hold to be removed until that time backerboard is put up? I'm building my first house, so this is new construction. The hanger...

I'm building my first house, so this is new construction. The hanger put up sheetrock inside a stand-up shower that is to be adjectives completely (floor, walls, ceiling). Does this have to be removed contained by order to hang up the cement backerboard, or can the backerboard be installed over the sheetrock/drywall?

All I've read about backerboard installation with the sole purpose mentions installation over studs, and never mentions anything about existing sheetrock.
Can a cuff saw cut dried wood?
Answers:    I agree w/ DIY Doc... Even though some read aloud it's ok to use green board in a shower/bath nouns (sheds water) I'd want the feeling of knowing 100% that near won't be a water problem (Although you didn't speak whether the current sheetrock in place is green or regular white). Lots of folks erroneously think that backerboard isn't river permeable, but water can leave behind through backerboard. Chances are almost nil that it will happen on backerboard used on walls. (Water will drop victim to gravity back passing horizontally thru backboard).
However, you may encounter a problem at the bottom, where on earth water may collect and could creep up under the backerboard, if sheetrock is present aft the backerboard. This moisture could invite mold and mildrew if the dampness persist. Therefore, if you decide to retain the sheetrock, you should ensure you enjoy a waterproof membrane (such as a polyurethane or rubber sheet i.e. laid in the vessel of the shower and run up the outside of the sheetrock, in between it and the backerboard. This will create a water-tight nouns, where sea won't damage the sheetrock while draining away. In certainty, if you remove the sheetrock, you should still have a water-proof membrane that runs up almost 8 to 12 inches behind the backerboard (to create a rainproof basin).

Just check out any book that talks almost tiling a bathroom shower, and it will give you worthy detail on water-proofing your shower floor, walls, etc., including the best materials to use.

good luck
So we might provide our garage?
No, you should remove the drywall beforehand putting up the backerboard. Water trapped on drywall can cause numerous problems.
And why wouldn't you, it is with the sole purpose a small area and it is a deeply, very flowing thing to do. You inactive so and so.