primer peeling

[kilty55]

hi chequers,on a posoitive note at least you have found this out at start of the floors and not done the entire job so thats a bonus mate,

as above the primer doesnt seem to have done its part and advice from the company seems wrong imo from what you have said......personally i wouldnt use that primer or addy for the job based on whats just happened cant you argue the case with the shop to do a swap

 

[Ajax123]

No thank you

But it sticks tiles to gypsum based screeds so why not??

 

[Mike Mike]

Any way that would not make much difference cos they are only one of many suppliers...... And in this case it is a bit unjust cos cemex supplied the screed not lafarge..... 🙂

😳 I didn't read all of the posts, so missed that it was Cemex. I can suggest burning down Cemex's HQ instead. In fact, here we are very Anticemex, LOL Välkommen till Anticimex - Anticimex

Ajax, you seem to know an awful lot about anhydrite screeds. Serious question here. What is the point of them? Seriously? What benefits, and advantages, if any, are there with calcium sulphate screeds vs calcium aluminate cement based SLC?

 

[The D]

But it sticks tiles to gypsum based screeds so why not??

I do not like being a gin pig and then blamed when it all goes wrong. There are a lot of threads on this subject and not many that have not had problems weather it be the tiler was told to sweep the floor with a stiff brush and no need to sand to remove the laitance or whatever you would like to call it today. (or do we have to sand with 80 grit??) or it could be the tiler has not applied sufficient primer or the tiler has over applied the primer or it is the wrong type of primer or it is a different type of anhydrite or we should be using gypsum adhesives. Anyway whatever I a staying away from them for now and we will see what problems the future holds for the poor old tilers that get involved .

 

[chequers]

I do not like being a gin pig and then blamed when it all goes wrong. There are a lot of threads on this subject and not many that have not had problems weather it be the tiler was told to sweep the floor with a stiff brush and no need to sand to remove the laitance or whatever you would like to call it today. (or do we have to sand with 80 grit??) or it could be the tiler has not applied sufficient primer or the tiler has over applied the primer or it is the wrong type of primer or it is a different type of anhydrite or we should be using gypsum adhesives. Anyway whatever I a staying away from them for now and we will see what problems the future holds for the poor old tilers that get involved .

Hi
Will try and post some photos ,ajax you are correct it is cemex supaflo ,i am in south wales ,will speak to cemex later

 

[doug boardley]

what ratio did you dilute the PR360 Chequers? I know on the tub it says between 3 and 5 parts water to 1 part primer.

 

[Time's Ran Out]

He used it 4:1 Doug. But I'am assuming that that is not 4 parts primer : 1 part water.

 

[chequers]

He used it 4:1 Doug. But I'am assuming that that is not 4 parts primer : 1 part water.

To confirm I mixed 4 parts water 1 part primer I had checked with their tech many times to make sure there were no mistakes . I was told that to have enough primer to give two coats I would need 45 kilos of pr360 but I have used about 8 kilos at 4 to 1

 

[chequers]

To confirm I mixed 4 parts water 1 part primer I had checked with their tech many times to make sure there were no mistakes . I was told that to have enough primer to give two coats I would need 45 kilos of pr360 but I have used about 8 kilos at 4 to 1

weber came down today with a 4 to 1 Pr 360 which they applied to test area after sanding clean ,i then applied a 4 to 1 of my pr360 next to it ,this evening to the eye they are not the same colour although still drying ,the weber 4 to 1 is fine but my 4 to 1 is if you put your fingernail on it is peeling.Same product ,same mix but both not working the same ?

I,m told that the Supaflo should have been mechanically sanded but cemex told me not to but in any event having seen the test area sanded and it is still peeling ?

I do wish i had gone with as different primer ,in fact we have done a test area on a no sanded patch with norcross and it is fine

Dont know where this is heading but how would you remove all this primer ,tried with a orbital 80 grit and it would take years .
Is there a machine out there ?
Ajax i have tried phoning ,will try you Monday
Thanks

 

[Ajax123]

Sorry mate I been away for a few days. Back on Monday though so will comment then if that is ok.