Hi, I am about to tile my bathroom (approx 30 m2) walls and floor with a 360mm x 270mm glazed ceramic tile the walls a plasterboard which have been painted (from reading other posts i know i'll have to remove the paint) but after this will i need to prime the plasterboards?. The floor has an approx 18mm chipboard sitting on top of a concrete floor. from further reading people seem to recommend removing this and replacing with ply which i don't mind doing as i want to do a nice job but after i have lined with ply which adhesive would you recommend and also would i need to prime first?


Thanks

prime walls after removing paint, i would use a white powdered adhesive , your tiles are a bit big for a ready mixed addy check out mapei adhesives tile giant if theres one near you.
as regards the floor what condition is the chip board in , how is it fastened down
if secure you could over lay with hardi backer board, other wise you could remove the chip board and use ,ditra matting

If you replace the chipboard with ply (is it onto battens on the concrete?), priming requirements will depend on the adhesive supplier you choose. Some say to prime, some don't so follow the advice of your chosen supplier. Incidently seal the back face and edges of the ply before you lay to reduce the possibility of moisture ingress.

Originally Posted by nybor62

prime walls after removing paint, i would use a white powdered adhesive , your tiles are a bit big for a ready mixed addy check out mapei adhesives tile giant if theres one near you.
as regards the floor what condition is the chip board in , how is it fastened down
if secure you could over lay with hardi backer board, other wise you could remove the chip board and use ,ditra matting

The chipboard is in good condition and as yet is not fixed down to the concrete underneath but i will screw and plug it down and take your advice and use a backer board. thanks for your help

pretty much covered above

to the forum

Originally Posted by grumpygrouter

If you replace the chipboard with ply (is it onto battens on the concrete?), priming requirements will depend on the adhesive supplier you choose. Some say to prime, some don't so follow the advice of your chosen supplier. Incidently seal the back face and edges of the ply before you lay to reduce the possibility of moisture ingress.

Ii'm probably going to go with Bal for my adhesives and grouts i know ill have to use a flexible adhesive for the floor will i also need to use a flexible grout? thanks for help

bal c.t.f is flexible and available in white,it also has a long pot life and isn't rapid setting giving you time to work with it

what condition is the concrete in as you may not need to board

Originally Posted by david campbell

bal c.t.f is flexible and available in white,it also has a long pot life and isn't rapid setting giving you time to work with it

thanks will have a look at that

Originally Posted by jay

what condition is the concrete in as you may not need to board

It's in good condition but is set about 30mm to low so i need the board for spacing aswell

shame is the floor area to big to slc might be a better option

would Bal Whitestar be ok to use for the walls or would i have to get an unmixed adhesive?

your tiles are border line on the size recommendations for tubbed adhesive,you will probably be cheaper with the cement based adhesive as it will be cheaper than whitestar

dont use white star, i would go for mapei adhesives better priced than bal and imo better, or webber addy