• Thanks for visiting TilersForums.com, the Tile Advice Forum. It's free to join if you'd like to register and ask a question should you not be able to search for your answers already. :)
The Wetroom Store - TilersForums.com Sponsor
This official sponsor may provide discounts for members

Discuss Floor tiles lifted on calcium based self level floor in the Tiling Forum | Tile Advice area at TilersForums.com

Joined
Mar 26, 2019
Messages
4
Location
Scotland
Hi all,my tiler fitted 600x600 porceline tiles to my calcium based concrete slab,it was 4 months after it being poured and he did a test by laying a peice of polythene taped around edges to see if it was still emiting moisture,this was after it was professionally sanded sorry and no moisture was detected,
He proceeded to seal the floor with norcos prime bond (duck egg green colour) the day before and layed tiles with decent Weber adhesive which I supplied,
Few month after moving in and building heat up gradually I heard crackling sound,I’ve now lifted every tile with a sucker leaving the floor perfectly clean,no adhesive has stuck apart from a hand sized area around a door post and beside back door,
On backs of tiles shows signs of a green colour like the bonding norcos primer,can any one help to what has happened as tiler at a loss as well
 
S

Spare Tool

Why the mix of primer and adhesive manufacturers? ...although it wouldn't usually cause a problem but you have lost any manufacturers warranties mixing them up..
 

Localtiler

TF
Esteemed
Arms
Joined
Nov 23, 2015
Messages
7,283
Reactions
9,307 88 1
Location
Yorkshire
What member type are you?
Professional Wall and Floor Tiler
What dilution rate of primer ? Was the heating turned commissioned prior to tiling ?
 
O

One Day

Screed hadn't fully cured. Residual moisture prevented the primer doing its job. Pop!
These floors need to be checked properly Not with a piece of plastic taped down!
 

Localtiler

TF
Esteemed
Arms
Joined
Nov 23, 2015
Messages
7,283
Reactions
9,307 88 1
Location
Yorkshire
What member type are you?
Professional Wall and Floor Tiler
If your tiling career has many years left then you need to own your own testing equipment as these screeds are only going to increase in popularity.
 

antonio

TF
Esteemed
Piastrellista Italiano
Arms
Joined
Oct 2, 2015
Messages
10,104
Reactions
22,973 60
Location
italy
What member type are you?
Professional Wall and Floor Tiler
If your tiling career has many years left then you need to own your own testing equipment as these screeds are only going to increase in popularity.
I agree with @Localtiler . I read years ago 80% of all new floors in France were lafarge gyvlon
not here....
some years ago they did it, but after a short time
has disappeared.
 

JulianSidney

TF
Esteemed
Arms
Joined
Apr 1, 2008
Messages
5,231
Reactions
8,383 62 3
Location
on a yacht somewhere on the essex coast
What member type are you?
Professional Wall and Floor Tiler
I've seen two around my way, tiled one, the other wouldn't let me test it so walked.
I have test equipment but really can't see it taking of at all.
I did have a customer who had a company lined up to do about 300m2, 50m2 was a pool surround. He was expecting me to tile it after 2 weeks. Got sand and cement in the end.
 

Localtiler

TF
Esteemed
Arms
Joined
Nov 23, 2015
Messages
7,283
Reactions
9,307 88 1
Location
Yorkshire
What member type are you?
Professional Wall and Floor Tiler
Probably not the best for a pool surround anyway. Where abouts is it you live Julian? I see a a fair few around here, and not exclusive to really big jobs either.
 

Localtiler

TF
Esteemed
Arms
Joined
Nov 23, 2015
Messages
7,283
Reactions
9,307 88 1
Location
Yorkshire
What member type are you?
Professional Wall and Floor Tiler
Bloody hell Julian I would have thought they would be loads going on down your way.
 
O

One Day

More and more in Lancashire area. Still mainly clueless and they're sold as rapid drying with no mention of laitence or sanding or heating commissioning.
Thankfully there are still some brilliant sand and cement screeders around here.
 

JulianSidney

TF
Esteemed
Arms
Joined
Apr 1, 2008
Messages
5,231
Reactions
8,383 62 3
Location
on a yacht somewhere on the essex coast
What member type are you?
Professional Wall and Floor Tiler
More and more in Lancashire area. Still mainly clueless and they're sold as rapid drying with no mention of laitence or sanding or heating commissioning.
Thankfully there are still some brilliant sand and cement screeders around here.
with my very, very limited dealings with these companies I've found the same. No mention of drying times and very little details in the hand out paperwork.

Bloody hell Julian I would have thought they would be loads going on down your way.
thank god I don't.
 
S

Spare Tool

I don't understand how they can cock up a liquid screed as badly as they do, got one on myself in April, the one Andy Local sanded for me and its 50mm out from one side of the room to the other :(
 

JulianSidney

TF
Esteemed
Arms
Joined
Apr 1, 2008
Messages
5,231
Reactions
8,383 62 3
Location
on a yacht somewhere on the essex coast
What member type are you?
Professional Wall and Floor Tiler
I don't understand how they can cock up a liquid screed as badly as they do, got one on myself in April, the one Andy Local sanded for me and its 50mm out from one side of the room to the other :(
hope they are coming back to put it right and the customer hasn't paid yet
 
S

Spare Tool

He's payed, they have been back and ground some off but will still need a sh#t load of leveler to make good..
 

Ajax123

TF
Arms
Joined
Apr 2, 2009
Messages
5,231
Reactions
835 6
Location
Lincolnshire
Pics look like combination of moisture and poor prep. Lots of laitance and dust on the back if that tile which suggests inadequate sanding or vacuuming. Looking at it I think you would have struggled even with a compatible adhesive. With cement it looks like it was doomed.
 

hmtiling

TF
Esteemed
Arms
Joined
Jun 26, 2011
Messages
3,241
Reactions
4,781 33
Location
Isle of Wight
IMG_20190328_113141.jpgif I could choose one substrate only to tile on it would be the alpha hemi hydrite ones I get here. Every tiler should have testing equipment but especially for gypsum screeds.
Anyway, mine's good to go
 

Ttt1601

TF
Arms
Joined
Jul 14, 2014
Messages
513
Reactions
446 1
Location
Abbotts Ann, Hampshire
Just because it's been professionally sanded, doesn't mean it's been done properly, most of the Anny screeds I go to, they say, the company came back sanded it so it is fine to tile, when in fact it's not, sand them too early and more latence will settle, and the guys screeding don't care about the prep a quick go over with light machine and they think it's fine, when in fact again it's not, same with proper dying times, they tell customers it will dry in X amount of time, when we all know it's only dry when a proper hygrometer or other test is done and gives sufficient reaults. Knowledge on these screeds is key
 

widler

TF
Esteemed
Arms
Joined
Feb 25, 2011
Messages
3,642
Reactions
2,310 16
Location
England
Apparently tilemaster make analfix to order now, as it’s not widely used and being sodded off, as it causes more problems for contractors than the initial layout .
Most of the ones I’ve done are ok, the one I’m on at the moment is the worst floor I’ve ever tiled
 

widler

TF
Esteemed
Arms
Joined
Feb 25, 2011
Messages
3,642
Reactions
2,310 16
Location
England
Just because it's been professionally sanded, doesn't mean it's been done properly, most of the Anny screeds I go to, they say, the company came back sanded it so it is fine to tile, when in fact it's not, sand them too early and more latence will settle, and the guys screeding don't care about the prep a quick go over with light machine and they think it's fine, when in fact again it's not, same with proper dying times, they tell customers it will dry in X amount of time, when we all know it's only dry when a proper hygrometer or other test is done and gives sufficient reaults. Knowledge on these screeds is key
They have to be sanded in the 1st few days or he latency gets too hard ?
 

Localtiler

TF
Esteemed
Arms
Joined
Nov 23, 2015
Messages
7,283
Reactions
9,307 88 1
Location
Yorkshire
What member type are you?
Professional Wall and Floor Tiler
You can sand these screeds at any time, yes they are softer in the early days but still sandable after many months.
 
B

Blunt Tool

I’m old school, I pee on them and time how long it takes to dry then refer to the water table graph, as per saturation point!
 

Reply to Floor tiles lifted on calcium based self level floor in the Tiling Forum | Tile Advice area at TilersForums.com

Tiling Forum

Get free wall and floor tiling advice from TilersForums.com's Tiling Forum. Both DIY and professional wall and floor tilers use this forum to make sure their tiling is spot on.

New Threads (Sitewide)

Mapei Tile Adhesive - Official forum sponsor
This official sponsor may provide discounts for members
Top Bottom

Use TilersForums.com to find Tiling Jobs or your Local Tilers for free. Get tiling tools at the best prices via the forum.