tiling onto plasterboard questions?

[John the tile]

hello

1) I have some mapei primer G, shall i give it a coat over some plasterboard prior to tiling and if so what are the reasons for this?

2) Im using large ceramic tiles in a bathroom. for adhesive i was thinking cementious (not repidset) should i need flexible?

thanks

 

[White Room]

I would give it prime just in case you have any bare gypsum showing.

Use a single part flexible

 

[nybor62]

as whitebeam says , would,nt hurt to tape and skim over joints with addy as well

 

[John the tile]

ahh both good advice., yes ill defo tape and skim joints.

ill use my primer, 50.50 watered mix.

and im gona use mapei kera flex (not rapidset).

thanks

p.s if i use mapei primer g and then mapei keraflex and them BAL grout. would i not be covered by mapei in the eventuality of any problems because i switched to BAL for the grout.?

thanks

 

[nybor62]

imho , i would say no . but the eventuality of there being a problem is doubt full ,bur better safe than sorry

 

[John the tile]

haha and then an hour later i get a text saying hes bought tubbed granfix for me to use after i repeatedly told him i needed cementious addy. -?

 

[White Room]

:yikes::yikes::ban:

 

[DHTiling]

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