Wall prep advice please

[Nic_P74]

Hi all,
New bathroom Job coming up Monday. Solid walls. Old files to rip off. Walls are skim on render. Guy says render is hard as rock dimensions are tight so not got room to dot and dab. If the render stays tight what would be best prep before tanking? All work I have done for last 5 years is on PB so rip it all of replace and tank. All last solid walls I’ve done render/hard wall has been moisture damage and I’ve taken back to brick/block and started again. TIA

 

[LM]

Hi all,
New bathroom Job coming up Monday. Solid walls. Old files to rip off. Walls are skim on render. Guy says render is hard as rock dimensions are tight so not got room to dot and dab. If the render stays tight what would be best prep before tanking? All work I have done for last 5 years is on PB so rip it all of replace and tank. All last solid walls I’ve done render/hard wall has been moisture damage and I’ve taken back to brick/block and started again. TIA

Have you not answered your own question?
Take it back to brick and waterproof backer board in wet area and d&d plaster board on the rest of the walls.

 

[Nic_P74]

Have you not answered your own question?
Take it back to brick and waterproof backer board in wet area and d&d plaster board on the rest of the walls.

Yeah kind of and gives me a solid base I ha e done and am sure of. But...
If the render is that solid could spend a loong time trying to get it off. Just wondered if good alternative to removing it all.

 

[WetSaw]

If the render is good then just prime and tile.

 

[Blunt Tool]

If the render is solid, just prime and skim walls with fast set adhesive then tank as per usual

 

[LM]

So is the suggestion here that the skim is removed from the render and remedial work carried out to that before tanking?
I don’t fancy that as a task if it is.

 

[LM]

What type of tiles are you using, what’s the weight of them?

 

[Blunt Tool]

So is the suggestion here that the skim is removed from the render and remedial work carried out to that before tanking?
I don’t fancy that as a task if it is.

No just scrape off loose stuff prime and skim with fast set addey simples

 

[LM]

No just scrape off loose stuff prime and skim with fast set addey simples

I agree providing weight limits aren’t an issue.

 

[Blunt Tool]

I agree providing weight limits aren’t an issue.

You saying I’m fat like?

 

[LM]

Just your head

 

[Nic_P74]

What type of tiles are you using, what’s the weight of them?

They are 450x450 Porc. 4.5kg per tile.

 

[LM]

At approx 5 tiles per mtr plus your adhesive and water you’re well over the weight limit of 20kgs for finish plaster.

 

[Nic_P74]

At approx 5 tiles per mtr plus your adhesive and water you’re well over the weight limit of 20kgs for finish plaster.

Yeah, these were supposed to be smaller ceramic tiles for he walls. The supplier apparently was not getting stock in time so the bathroom designer has changed them to the same as the floor tiles looks like it’ll be back to the block and backer boards.