Should you tank masonry wall?

[veedee]

Bathroom will have a bath with an incorporated shower

Some of the wall in the bath/shower area is plasterboard.

However the majority is breeze block which has been plastered over

Does the masonry area need to be tanked prior to tiling?

 

[dontbelieveawordofit]

no. providing you use the correct adhesive and grout. pref not the ready mixed junk from B&q .

 

[veedee]

no. providing you use the correct adhesive and grout. pref not the ready mixed junk from B&q .

Okay, we'll tank the plasterboard area

I'm using grout and rapid set flexible adhesive from mapei

Tanking kit is from mapei too

 

[dontbelieveawordofit]

rapid set really is rapid set this time of year, bear that in mind when your mixing .....small amounts

 

[bobasd]

Dont use any kind of plasterboard on wet walls - if you have p/b on wet walls then remove the p/board and replace with backerboard.
Tanking is not necessary but it would pay you to post a couple of pics showing the condition of the masonry wall surfaces?