Do I neen to prime plasterboard?

[Joiner_Mike]

Hi all
Probably a simple answer for you tilers.
I want to tile a fireplace (just the wall surrounding a gas fire.) It's an old house and the wall is very uneven. Was thinking of fixing some pink plasterboard and then tiling onto that. Do I prime the pink plasterboard with something or can i tile straight onto the plasterboard?
Tried to look it up and all i can find is the PVA argument but all them cases where when tiling in a shower or other high moisture areas.
Thank you all in advance for your time answering
Mike

[bd3cc]

Why pink plasterboard?
PVA on ordinary should be ok

[plumbbob]

Many in the trade slosh it about quite liberally from what I know and see. It even recommends it for that use on the instructions!

However, on a small area such as you are doing, you can take it or leave it.

Maybe it is not necessary to use the fire resistant board, but if it is close proximity to the fire, then it is probably a good idea.