Getting tiles off concrete board

[Tally101]

Hi all
I’m trying to take off the tiles in my shower and have done most , need to re plasterboard some walls now but the problem is half of a wall has concrete board under the tiles and won’t come off , what the best way of either getting the tiles off or cutting the concrete board, I can borrow an angle grinder , would that work with something tough to cut grout and concrete board
Thanks

 

[Deleted member 174758]

For getting the tiles off have you tried a SDS drill in hammer only mode and a cranked tile remover?

I've used the Bosch version for years. Works on a lot of stuff, although I have yet to try it on cement fibre board (which I presume is what you mean by "concrete board")

Alternatively these discs will cut cement fibre board and a lot of other abrasive materials:

Obtainable from Toolstation. I was buying them last year to cut-out ventilation duct openings in 15mm cement fibre board screwed onto 18mm OSB. Went through both in a single cut on a basic cordless angle grinder. BTW the older blades were black, not blue (in case you get old stock). They are tough, but they won't last forever.

 

[foxhole]

BIG hammer.

 

[Deleted member 174758]

If all you have us a hammer, then everything else is a nail

 

[RandomGrinch]

BIG hammer.

Bet it's not this big!
(Apologies if anyone has seen this already! )