Require a little advice please

[Davidwhite136]

Hi all you have all prob heard this a million times but..

I've dot and dabbed my bathroom Walls would like to tile directley onto it*

Using zamora 30 x 60*Porcelain tiles*
[30x60.html]Zamora Brown Wall and Floor Tile (Topps Tiles[/url]


Can I do this ?
What would I need ?


Thanks. ( been searching but unsure)*

 

[Daz]

Hi David and welcome.

What have you D&D'd, is it plasterboard or cement boards?
And what did you D&D to?

 

[Davidwhite136]

Sorry it's 9.5 plaster board on one wall
and 12.5 on the other
Onto solid brick Walls

on the 9.5 only tilling up 2 high
and the 12.5 all the way up as shower is also on this wall

 

[White Room]

Did you dab with dry wall adhesive for the plasterboard

 

[Daz]

Weight wise you should be okay.
Are you planning to tank the shower area?

Prime the boards with an acrylic primer. Use a flexible single part cement based adhesive with an 8 or 10mm trowel and backskim the tiles as well.
Use a flexible grout and you'll be fine.

Good luck and don't forget the pics when done .

 

[Davidwhite136]

Whitebeam -yes think so not sure of the name can do tomorrow

Captainslow - will do also tank ?

 

[Daz]

Tanking is recommended .

 

[david campbell]

as above shower area should be tanked

 

[nybor62]

as all above

 

[Colour Republic]

This is a job we did with the same tile, straight onto bare plasterboard

 

[deno3]

why tank the shower ???????

 

[Deleted member 9966]

why tank the shower ???????

tanking is a waterproofing system that acts as a barrier between the tile adhesive and the wall substrate. it works to reduce the impact of water ingression through the tiles, adhesive and grout. it's very cost effective when you think of how much a full re-fit could cost if tanking hadn't been used.

 

[dock]

From the BS tiling and grout even if epoxy grout is used cannot be guaranteed to provide a water tight finish. When...........not if...........water gets through.........well safe to say for the sake of a few quid extra its better that the background is protected even if the shower has time to mostly dry out in between periods of use especially if its above ground floor.

 

[obobsmith]

As above mate tank the area as you would not beleive the damage to the underlying structure that water will cause over a period of time. Plasterboard and any wooden structures will turn to mush, damp through to adjoining rooms etc.
Do it right first time, tanking is not that expensive, redoing your work will be.

 

[deno3]

i know what tanking is and what its for but if the job is off sound construction and the tiling and grouting is done properly and the shower is mastic on all corners and the shower tray there is your waterproof surely thats why you do the tiling to stop the walls behined getting wet and to look nice :lol:

 

[Deleted member 9966]

i know what tanking is and what its for but if the job is off sound construction and the tiling and grouting is done properly and the shower is mastic on all corners and the shower tray there is your waterproof surely thats why you do the tiling to stop the walls behined getting wet and to look nice :lol:

grout is not waterproof, adhesive is not waterproof and tiles are not waterproof, so that is why tanking is recommended.

 

[obobsmith]

grout is not waterproof, adhesive is not waterproof and tiles are not waterproof, so that is why tanking is recommended.

Well said, please listen to the advice you are getting I have recently completed two jobs where the previous installation had not been tanked, one of which had severe structural damage to wooden beams , ie. I could literally push my finger into the beam it was so rotten.

 

[deno3]

grout is not waterproof, adhesive is not waterproof and tiles are not waterproof, so that is why tanking is recommended.

why use them in a shower or all wet areas that is the worst advise i have ever heard im 40 and have been tiling from 18 man and boy some advice on here just doesn't fit im sure bal & mapie & ardex would like to hear their products are not water proof

 

[obobsmith]

why use them in a shower or all wet areas that is the worst advise i have ever heard im 40 and have been tiling from 18 man and boy some advice on here just doesn't fit im sure bal & mapie & ardex would like to hear their products are not water proof

Im quite sure Mapei or any of the other manufacturers will confirm that their addys and grouts are not waterproof. Their is a significant difference between waterproof and water resistant.

 

[Deleted member 9966]

From the BS tiling and grout even if epoxy grout is used cannot be guaranteed to provide a water tight finish. When...........not if...........water gets through.........well safe to say for the sake of a few quid extra its better that the background is protected even if the shower has time to mostly dry out in between periods of use especially if its above ground floor.

why use them in a shower or all wet areas that is the worst advise i have ever heard im 40 and have been tiling from 18 man and boy some advice on here just doesn't fit im sure bal & mapie & ardex would like to hear their products are not water proof

deno, dock is a mapei employee and not at any point does he claim that mapei products are waterproof. in fact, from dock's post above, he confirms that even epoxy grout isn't water tight.

I speak from experience about the need for tanking. My en-suite shower room leaked like a sieve through the tubbed addy and cheap tiles. thankfully my lounge ceiling was able to dry out and not much of it needed repairing.

 

[Colour Republic]

deno, dock is a mapei employee and not at any point does he claim that mapei products are waterproof. in fact, from dock's post above, he confirms that even epoxy grout isn't water tight.

I speak from experience about the need for tanking. My en-suite shower room leaked like a sieve through the tubbed addy and cheap tiles. thankfully my lounge ceiling was able to dry out and not much of it needed repairing.

He did confirm it Liz but in regards to epoxy, he said it couldn't be Guaranteed to be water tight, by which i think he means when it comes to installation

 

[deno3]

mmmm not sure what to make of this all ?????

 

[Deleted member 9966]

He did confirm it Liz but in regards to epoxy, he said it couldn't be Guaranteed to be water tight, by which i think he means when it comes to installation

I couldn't find anything in the Mapei data sheets that I was reading that confirmed whether or not the adhesives or grouts were waterproof. in fact, only the grout data sheets I read stated that they were water repellent. over time, water will eventually stop being repelled.

 

[Colour Republic]

mmmm not sure what to make of this all ?????

most grouts when wet will change colour slightly, even once the surface water has dried the colour takes some time to return to normal, this is evidence that the grout whilst water resistant is not waterproof. The water that travels through the grout whilst minimal can over a number of years breakdown substrates

 

[nybor62]

im finding this very interesting and agree with most points , but it does clearly state on some adhesive products that they are water proof,but i think we need to under stand the definition of water proof.impervious to ,or uninfected by water, which i think basically means ,it wont break down in water,has for water resistant hinders the penetration of water, well that,s how i see it

 

[nybor62]

mmmm not sure what to make of this all ?????

i would,nt worry about it deno.alot depends on circumstances ,if your doing house bashing .i.e say persimmons you prob would never tank as they wont pay for it.we all ways primed & solid bed tiles in wet areas,useing water proof addy

 

[dock]

some ready mixed adhesives are not water resistant i.e. D1's
some ready mixed adhesives are water resistant i.e. D2's
cement based adhesives are generally water resistant C1's or C2's

NO cement based adhesive is waterproof/impervious even with an admix in it

cement based grouts are water resistant CG1's or CG2's
some ready mixed acrylic grouts are waterproof/impervious

NO cement based grout is waterproof/impervious even with an admix in it. That is the main reason that they should not be used food preparation and storage ares.

Epoxide resin based grouts ARE waterproof/impervious. The installation cannot be guaranteed watertight due to workmanship aspects (a small void may be present within the joint) or if there is movement and a crack develops within the joint.

Some manufacturer's use the word waterproof as meaning "proof" to water (resistant to water) or water does not affect its performance in service

 

[Davidwhite136]

Thanks for the advice
So I'm going to prime the Walls with Acrylic Primer 2.5Ltr White - Screwfix.com, Where the Trade Buys

then do you tank over this as shower is above bath
what tanking would you use?

 

[Colour Republic]

Thanks for the advice
So I'm going to prime the Walls with Acrylic Primer 2.5Ltr White - Screwfix.com, Where the Trade Buys

then do you tank over this as shower is above bath
what tanking would you use?

No, the link you have posted is a paint, it is a primer for wood before you undercoat then top coat with a gloss or eggshell paint

I can see where you have got confused because it is also an acrylic primer but it is not the same as an SBR

If you are going to tank with a kit like the ones that come from Mapei, Bal, Weber ect. ect. then they will come with a primer in the kit already

 

[deno3]

i would,nt worry about it deno.alot depends on circumstances ,if your doing house bashing .i.e say persimmons you prob would never tank as they wont pay for it.we all ways primed & solid bed tiles in wet areas,useing water proof addy

some sence at last

 

[obobsmith]

some sence at last

Only stacking up problems, cost issue with builder not how it should be done now, understand why, but that is why two of my customers ( new builds)have had issues with their bathrooms one quite serious.
IMO not tanking just means a little ticking time bomb.

Sense is doing the job correctly, over time we learn that some things we thought were good practice are not, products improve, understanding increases and we hopefully gain.