Impey Waterguard, how high to go?

[Beyond the blue]

I am using Impey Waterguard to tank the floor and walls of my wet room project. The supplier of the Waterguard (who are wet room installers) advised me to only go 1mtr high on the walls to ensure better tile adhesion above this height. The walls are skimmed plaster. Anyone got any thoughts on this?

 

[Waluigi]

Whilst 1m up is the danger area in wet rooms and showers, I do the whole wall.

Regarding the plaster- how heavy are the tiles?

Tile size and material might give us an idea of weight

 

[Qwerty]

Yes, full height all day long!

 

[Beyond the blue]

The tiles are porcelain 10mm thick 600 x 300 laying horizontal. The walls are Thermalite Breeze block (plastered) all in sound condition only 20 years old.

 

[Waluigi]

You’re over the limit of what you should hang on a plastered wall. The limit is 20kg Per sq/metre.

Impey suggest the maximum you can hang off waterguard is 30kg per sq/metre based on bare plasterboard or cement board.

 

[Beyond the blue]

I've just done a check with the actual tiles and 5.5 of them (1sq mtr) = 18.7 kg, so with adhesive & grout, yes I'm on the limit of 20 kg. Does this affect your advice?

 

[Waluigi]

The weight you are suggesting seems a little low to me.

It’s your call, that’s the limit and I’d imagine you are over it.

I’d contact Impey and ask them if they’ve done any testing on a plasterer wall. That said, it would be impossible for it ever to be over 20kg PSM.

 

[Impey Showers]

Give us a call if unsure

 

[Beyond the blue]

Give us a call if unsure

Will do, thanks.

 

[acaciaguy]

Speak to them. Very helpful company