Problems with peeling tanking

[jonnyc]

Just been using two different tanking kits.
both on to plastered walls.
first one was Mira 4180 primed as per instructions on to dry Plaster Left to dry overnight . Next day applied two coats Mira multi coat.following day tanking looks fine but if you geta scraper under it you can peel tanking liquid and primer straight off the plaster.
another bathroom same plastered wall.primed as per instruction with Mapei primer g followed by ccl tanking liquid .same drying times same result.
never tried to peel it off before so maybe this is normal.
anyone found this.

 

[White Room]

There was another thread about peeling tanking, it was the palace stuff and the ideas was over polished plaster, moisture in the plaster etc....

 

[thompsonbrown]

Just been using two different tanking kits.
both on to plastered walls.
first one was Mira 4180 primed as per instructions on to dry Plaster Left to dry overnight . Next day applied two coats Mira multi coat.following day tanking looks fine but if you geta scraper under it you can peel tanking liquid and primer straight off the plaster.
another bathroom same plastered wall.primed as per instruction with Mapei primer g followed by ccl tanking liquid .same drying times same result.
never tried to peel it off before so maybe this is normal.
anyone found this.

Im not going to ask a JOTY winner if he applied it right, I also have found the same problem with a Mapei tanking kit I used lately. I let it dry for an additional 2 days and it seemed fine. I put it down to the weather.

 

[Time's Ran Out]

By I've never known 1 company have so many issues!
Have you saved them up over the years for us or do they actually occur on a weekly basis.
It makes extremely interesting reading but it certainly reaffirms my belief that staying a small business in my twilight years will prolong a happy life!

 

[Chalker]

Used to use the mappai tanking and other latex/paint types. Always felt that they didnt stick that well. Last few showers I habe been using the ardex kit. Put that stuff on anything and you won't get it off .

 

[thompsonbrown]

Used to use the mappai tanking and other latex/paint types. Always felt that they didnt stick that well. Last few showers I habe been using the ardex kit. Put that stuff on anything and you won't get it off .

I find the ardex 250 tanking kit the best about. Just wish I could find it locally.

 

[Chalker]

For ardex There's a ctd in Carlisle. Is that anywhere near you?
i have a couple in the garage for stock

 

[beanz]

Just been using two different tanking kits.
both on to plastered walls.
first one was Mira 4180 primed as per instructions on to dry Plaster Left to dry overnight . Next day applied two coats Mira multi coat.following day tanking looks fine but if you geta scraper under it you can peel tanking liquid and primer straight off the plaster.
another bathroom same plastered wall.primed as per instruction with Mapei primer g followed by ccl tanking liquid .same drying times same result.
never tried to peel it off before so maybe this is normal.
anyone found this.

Can I ask what made you take a scraper to it? I can't say I've ever tried to do that, so no idea if that's normal or not!?!

 

[beanz]

I find the ardex 250 tanking kit the best about. Just wish I could find it locally.

Have you tried the weber kit? I've found it to be the easiest to work with, so far, but I haven't tried the ardex kit yet, so couldn't compare..

 

[thompsonbrown]

Sorry Mate, haven't used the Webber Kit, but have heard on here its good. I get my Ardex kits from tile fix direct and I think they sell webber gear.
So next job I'll give it a try.

 

[Chalker]

I've used the webber kit. It's the same as mapei, but a different colour. I must admit, the webber/mapei corner tape is better than ardex. It's a shame you can't get the two combined.

 

[Ian]

One word, Ardex. Fantastic liquid kit, there really is no comparison on the market currently.

 

[jonnyc]

Can I ask what made you take a scraper to it? I can't say I've ever tried to do that, so no idea if that's normal or not!?!

No reason for trying to peel off.just thought I would see how well stuck.bit of a shock.
strange thing is that on sera of wall that had only primer on it ,primer was well stuck to wall.
only after tanking liquid applied and dry could I peel primer and tanking off wall.
you can tell that primer come off as so porous and wet finger discolours plaster immediately

 

[beanz]

Certainly a bit of a worry!

 

[jonnyc]

Certainly a bit of a worry!

Try it next time you tank the next day.
this could be just the way it is.mira have not come back to me yet.
been using Mira without failure for 12years or more

 

[rj1884]

Ardex for me as well. Easy to work with and you can start tiling the same day.

 

[beanz]

Try it next time you tank the next day.
this could be just the way it is.mira have not come back to me yet.
been using Mira without failure for 12years or more

Someone else had this problem a week or so ago.. I can't remember which brand it was though, so could be a dodgy batch, or like you say, just the way it is until it's had time to fully cure!?!

 

[Rossymcg]

There was another thread about peeling tanking, it was the palace stuff and the ideas was over polished plaster, moisture in the plaster etc....

Other thread was me and plaster wasn't over polished nor moisture in the plaster,

Try it next time you tank the next day.
this could be just the way it is.mira have not come back to me yet.
been using Mira without failure for 12years or more

I had exactly the same problem as you John, primer peeling off with the barrier paint,
the mega reps told me(used mega after palace peeled twice), "it's the way it is" scraping and pulling in a small area applies a much greater and different type of force than hanging tiles off it, so I trusted his words(maybe stupidly) but all the 8mm glass mosaics are still stuck to the wall, I also left it a few days longer to dry out than manufactures recommendations which seemed to help with adhesion

 

[jonnyc]

Other thread was me and plaster wasn't over polished nor moisture in the plaster,


I had exactly the same problem as you John, primer peeling off with the barrier paint,
the mega reps told me(used mega after palace peeled twice), "it's the way it is" scraping and pulling in a small area applies a much greater and different type of force than hanging tiles off it, so I trusted his words(maybe stupidly) but all the 8mm glass mosaics are still stuck to the wall, I also left it a few days longer to dry out than manufactures recommendations which seemed to help with adhesion

think youre right .
left the sample area a few more days and much harder to peel off and could only do so when getting a scraper under it.
picking at it after three days could not touch it .