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  1. #1
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    Default Please help getting conflicting advice!!!

    I'm new to the site, so hello to everyone.

    I'm looking for advice as i've been told different things by people and read so much forums etc my head is in a spin!!

    I'm installing a new bathroom in my flat to refresh it cause i need to sell, with new suite and tiles going in. When i started removing old tiles, whatever they were stuck onto fell to bits so i am now back to the brick!!!

    Me and may mate who has some diy experience were planning to put pva onto the brickwork, then dot and dab plasterboard onto the wall then, pva again, then tile onto the plasterboard.

    However, after speaking to others and reading this forum, this is probably not going to work.

    I'm trying to keep costs down to a minumum as i'm selling, so is what i've suggested enough?? I'm worried about moisture from shower, i've a bath/shower not a seperate shower.

    Any info/help would be gratefully appreciated and by the way my tiles are pretty heavy and due to size, door frame, window and area for bath i cannot put in studwork.

    Cheers

  2. #2
    * TF Super Moderator *
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    Default Re: Please help getting conflicting advice!!!

    You will be fine to dot n dab the plasterboard, but don't pva the tiling surface, pva has no place in tiling. You say your tiles are quite heavy, how heavy?

    Oh Welcome to the forums.

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    Default Re: Please help getting conflicting advice!!!

    Thanks for the propmpt reply.

    compared to my last tiles these things are heavy, they are 300x440x9mm.

    Should i still pva my brickwork or do i need to bother? The thing i'm worried about is moisture, if i use normal plasterboard should i coat this with anything before tiling to make it waterproof?? Or should i just buy waterproof plasterboard, or would it be cheaper waterproofing normal plasterboard with some kind of stuff (technical term) lol

    Also, i've bought evo-stik tile adhesive and grout, which apparently is waterproof, mould resistant etc, but my mate says to stay clear of combined adhesive and grout and to use seperate?

    I thought this was gonna be not too bad, but the more i read the more confused i get that i don't have the right stuff and i'll make a rubbish job!!

    Thanks for the info

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    Default Re: Please help getting conflicting advice!!!

    Don't think you need to pva brickwork before dot and dabbing plasterboard but one of the plasterers on here may advise better. if you are going to be tiling a wet area i.e. shower area then it is always advisable to tank te area first. The genrally preferred method on here is to use a mambrane system from the likes of Durabase or Schluter. You stick this to the plasterbaord forst with cement based adhesive and then tile on top with cement based adhesive.

    Tiel and Grout in 1 bucket is not a good idea. adhesive has a differretn function to grout and unless it is epoxy, you should have separate products for each function.

    Never hear of waterproof plasterboard, you thinking of tile backer board?

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    Tilers Forums Arms Member mikethetile's Avatar
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    Default Re: Please help getting conflicting advice!!!



    with grumpy on this one, theres no reason why you shouldnt dot and dab but no pva

    plasterboard is an excelent back ground for tiling

    take care to keep it plumb and flat or it will show when you tile

    its a good idea to use a tanking kit behind the tiles at the shower end and let potential buyers know that you have done so

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    Tilers Forums Arms Member Eddie's Avatar
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    Default Re: Please help getting conflicting advice!!!

    You could plug and screw your plaster board, through the dabs of p/b adhesive, as a extra fixing, if your tiles are that heavy.

  7. #7
    Tilers Forums Arms Member mikethetile's Avatar
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    Default Re: Please help getting conflicting advice!!!

    your thinking of aqua board which is basicly a water resistant plasterboard, you can use this and waterproof adhesive followed by waterproof grout

    but i still prefer to tank as i believe it to be a better job

    aqua board is water resistant but i have still seen it break down when constantly wetted in a shower

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    Default Re: Please help getting conflicting advice!!!

    Tank the area? Is that that bal wp1 stuff that folk on this webwite refer to? Does that make normal plasterboard waterproof?

    I thought you could buy waterproof plasterboard???......maybe not!!! lol

    God this is turning out to be complicated, maybe best to bite the bullett and pay someone to plaster?!

    I thought it would be as easy as dot and dabbing plasterboard then sealing it then putting up tiles, well that's what my mate led me to believe!!!

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    TilersForums Black Prince Fekin's Avatar
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    Default Re: Please help getting conflicting advice!!!

    No point in having it plastered as the weight limit that can be tiled will drop as plaster has a lower weight limit that can be stuck to it compared to plasterboard.

    If I remember correctly, bare plasterboard can hold 32kg per sqm, where as plaster can only hold 20kg.

    Dot and dabbing plasterboards fine, just use pleanty of dabs of dry wall adhesive

    Lots of places sell different tanking kits, some as little as 30 upwards and over 100.

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    Default Re: Please help getting conflicting advice!!!

    Quote Originally Posted by bcurtis View Post
    Tank the area? Is that that bal wp1 stuff that folk on this webwite refer to? Does that make normal plasterboard waterproof?

    I thought you could buy waterproof plasterboard???......maybe not!!! lol

    God this is turning out to be complicated, maybe best to bite the bullett and pay someone to plaster?!

    I thought it would be as easy as dot and dabbing plasterboard then sealing it then putting up tiles, well that's what my mate led me to believe!!!
    It pretty much is, you just need to seal (waterproof) the plasterboard with a membrane system before tiling. The BAL system is of the same sort, but Durabase CI from wetdecs our wetrooms sponsor is probably a better option.

  11. #11
    Tilers Forums Arms Member mikethetile's Avatar
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    Default Re: Please help getting conflicting advice!!!

    dont get it plastered , tile onto the board

    you can use bal wp1 its an easy kit to use, dunlop make the same kit available from screwfix , its cheaper retail than bal

    ive never used the dunlop kit but dnlop is owned by bal

  12. #12
    Andrew M
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    Default Re: Please help getting conflicting advice!!!

    I think you mean the moisture resistant plasterboard(green) which is no substitute to tanking ordinary p/board,
    As you are boarding out anyway why not substitute plasterboard in shower area only with tile backer board, it will probably work out cheaper than having to buy a tanking kit

    Certainly dont use pva before tiling. you will need a cement based adhesive for tiles that size,depending on which manufacturer you go for they will have a primer to suit

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