gd226 wrote:
I have a small foyer with exposed concrete board.
the previous owner had left it exposed, and apparently had
a litter box there, so the concrete board now smells of cat urine.

My question is how to remove the concrete board.
(It's been mortared into place.)

thanks,
Homi


Over a slab? Shouldn't have even been used for that application. Use a
flat bar. Over a wood subfloor? With nails or screws too? Screws
you may be able ot back out. Nails you can pull. Again a flat bar.

Won't be an easy chore either way.