do i need to tank or will tiles be ok in my wetroom?

[andypippa10]

Hi I have a downstairs wet room just over 2x2m. We have a concrete floor and all block walls now plastered. Our plumber has put in the drain, builder shaped the floor and UFH gone down with 4 to 2 screed mix to go on top. Do I need to tank the floor and walls as well or will tiles and grout be ok?? Don't want a leak through the grout. Hope you guys can help

 

[Alan.P]

Hi, for the price of a kit and the relativity small amount of labour needed to do it, I would tank it, just for piece of minds sake.

 

[peteablard]

Definitely tank it for piece of mind. Check out the post that Peckers has recently put on here, it shows how important it is to do things properly.

 

[peckers]

As above!

 

[nybor62]

defo tank

 

[The Legend; Phil Hobson RIP]

How thick is the screed? 4:2 is to strong, 4:1 is the norm. Maybe I'm reading this wrong, but as above tank.

 

[Mike Mike]

It isn't for "peace of mind". If you have a wetroom then you absolutely, categorically, it isn't open for debat MUST tank it. You MUST.

Grout is NOT waterproof. Water DOES pass into and through grout. Depending on what tiles you plan to use they may be porous (most natural stone, porcelain albeit much less than stone, but more so than glazed ceramic).

Tank the entire floor, and tank the walls in the wet zone 1 (the shower area + 1 metre either side, and if the shower is on an outside wall then tank that whole wall).

Gypsum plaster is water sensitive. WHEN (not if) water penetrates the grout the plaster will get wet and over time start to crumble.

I thought from Jan 2012 the EU harmonised bathroom regulations under ETAG 022? Does this not apply in the U.K.????

Tank it. Tank it now. Or I'm calling the tanking Police, and you, your plumber and your builder will all end up on Crimewatch :lol:

 

[tobins tiling]

Swedish mike you have me in switches with some of your comments sometimes I only go into threads to see what you've wrote haha..... Oh yer tank it defo mate

 

[Mike Mike]

Swedish mike you have me in switches with some of your comments sometimes I only go into threads to see what you've wrote haha..... Oh yer tank it defo mate

I can't take full credit for all my posts Tobins Tiling. At least 50% of the credit must go to the imagination expanding effects of the Pißwasser* that I am drinking :lol::8:
* The letter ß is pronounced "ss"

 

[tobins tiling]

Haha ok mike I think I'll stick to my cans of bud ,maybe next time I'm in Sweden I'll try that tho:8:

 

[Mike Mike]

haha ok mike i think i'll stick to my cans of bud ,maybe next time i'm in sweden i'll try that tho:8:

that's what i'm drinking man! Budweiser aka pißwasser! :8:

 

[Tony73]

def. tank. but beer is no good. vodka is the ONE to drink :hurray:

 

[Mike Mike]

def. tank. but beer is no good. vodka is the ONE to drink :hurray:

You can take the boy out of the former Soviet Union, but you can't take the former Soviet Union out of the boy... :lol::8:

 

[Tony73]

vodka does not mean soviet :lol: vadka is mans drink. you getting bigger when drink beer. ( so i am fit guy)

 

[andypippa10]

Thanks for replies. Will tank. Any ideas which is best/easiest product. Will diy it?

 

[DHTiling]

How old is the screed

 

[andypippa10]

The screed hasn't gone down yet as the rooms run level with a utility and kitchen, so just got to find kitchen tiles and will then all go down together. Just thought I could get the stuff I need ready so it can be done once the screed is dry and there seem to be lots on the market but wanted to make sure it was compatible with UFH and concrete as most wet floors seem to be upstairs on timbers.