PVA WETROOM WALLS OR NO?

[MikeHalligan]

Hi all,
Old bathroom becoming wetroom, two of the walls were dot dabbed with the water resit plasterboard, the other two are the original 70year old plaster which have been painted. The tiler I have says the new water resistant boards are fine to tile straight on to, is he correct or no? Also, the other two old plastered walls which have been painted, he says all they need is PVA then tile, but I have one person saying do not put PVA on wall, he should sand the paint off, cover the wall in two of SBR, then scratch deep with angle grinder or at least Stanley knife all over. Who is correct here I don't know who to trust?

Thank you very much

 

[Dave]

Deffo no to PVA.

Thread title states wetroom. ? Or is it a shower over bath. ?

 

[MikeHalligan]

Deffo no to PVA.

Thread title states wetroom. ? Or is it a shower over bath. ?

Sorry I meant shower over bath yes

 

[Dave]

Ok. Under new bs5385 guidelines, all wet areas ( showers/bath areas ) should be waterproofed/tanked.
remove all loose or peeling paint , prime walls with acrylic primer and tank. All instructions will be on the tanking kit tub. There is no need to grind the walls 😳.Also make sure existing walls are suitable for the size of tiles you will be installing and in a stable condition.

 

[Bathfix Bob]

If that is a waterfall tap, swap it please for a decent branded tap. When it fails and it will in 2 years the bath will have to be removed to get to it or break through from the other side.

Never put taps on the back wall.

 

[Dave]

If that is a waterfall tap, swap it please for a decent branded tap. When it fails and it will in 2 years the bath will have to be removed to get to it or break through from the other side.

Never put taps on the back wall.

I see loads fixed that way as well. Always thought what if that fails lol.

 

[Bathfix Bob]

I see loads fixed that way as well. Always thought what if that fails lol.

I shudder when I see it, many a time I've had to break the bad news to people, its not the cartridges its the filter gauze rotted away and the water shoots out, misses the bath and sprays against the opposite wall.

 

[MikeHalligan]

Okay, are you saying that will happen with all brands of waterfall raps and should be avoided completely? What taps would you recommend given they staying there's now the baths been drilled sadly.

 

[Bathfix Bob]

Okay, are you saying that will happen with all brands of waterfall raps and should be avoided completely? What taps would you recommend given they staying there's now the baths been drilled sadly.

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Something like this Mike, and the fact its on union nuts aswell means swapping is a doddle but it wouldn't come to it if its a well known make with spares back up.

The existing one might have allen key bolts holding this spout in but if its unbranded then spares in 2-5 years are tricky.

 

[MikeHalligan]

Okay I get what you now, sounds like a silly questions but if he bath taps stayed and were only used ran once per week, surely they'd last longer than 2 years before any issues? This is the one I had fitted Orchard Derwent waterfall bath mixer tap - https://victoriaplum.com/product/orchard-derwent-waterfall-bath-mixer-tap

 

[Bathfix Bob]

It will fail especially if from Victoria Plum, there stuff is unbranded chinese junk, you can't get parts.

Is the fitter pressuring you to leave it in? Ask yourself this...will he be coming straight round to break tiles off and pull your bath out in 2 years when you phone him on a Saturday afternoon to tell him the tap has failed.

 

[MikeHalligan]

The pressure is coming from the tiler who is still saying the old plastered painted wall is fine to just be covered in pva and then tiled.

 

[Dave]

The pressure is coming from the tiler who is still saying the old plastered painted wall is fine to just be covered in pva and then tiled.

😂😂 he aint no tiler then.
Please do not use PVA.