Do I Need to use PVA on the Plywood in my B-Room, b4 Tiling?

[gaz0001]

Hi,

Do i need to put anything like PVA or owt like that over the plywood on my bathroom floor beofre i tile the floor??


Currently, have 20mm high quality plyboard over the existing floorboards. Floor is rocksolid!

Have powder adhesive, waterproof, and ultra flexible, for the floor tiles.


Do i just use the adhesive or coat the ply before putting the adhesive on???

Thanks, in advance.

 

[mikeyd]

Nope, no need to PVA.

You might want to mop it and let it dry if it's dusty but that's about it for preparation. Your choice of adhesive sounds spot on.

 

[gcol]

Not normally, but always follow the instructions on the adhesive.

 

[Master of None]

gcol,
I thought you would have jumped on the DONT USE PVA AS PRIMER IN WET AREAS. I know this because I have read many many previous posts on the subject and in one you give an excelent science lesson on how adhesive works at a microscopic level. .
OP if you search for this thread you will completely understand.

 

[gcol]

gcol,
I thought you would have jumped on the DONT USE PVA AS PRIMER IN WET AREAS. I know this because I have read many many previous posts on the subject and in one you give an excelent science lesson on how adhesive works at a microscopic level. .
OP if you search for this thread you will completely understand.

Really?! Must have been pished that night - have you got a link?

 

[neds]

Everyone keeps banging on about PVA as a primer but its simple science. PVA will act as a sealant and wont allow any adhesion. Good for paper maché though

 

[Master of None]

Sorry gcol have looked for the post and it was not yourself it was Moz's mate Mudster. Sorry I mis quoted you. . Any way here is the link if anyone wants to read it.
//www.diynot.com/forums/viewtopic.php?p=603005#603005
By the way my search for PVA in the tiling forum came back with 174 hits. Popular question isn't it. In fact when I went to my local tile shed for BAL APD for my bathroom he said they don't stock it but I could use PVA luckily because I read so many posts on here I did not use it and went to tops for APD.