Codex . 95% moisture adhesive

[Dumbo]

I see codex have a product where they claim you can tile anhydrate screeds up to 95 % moisture content .

 

[hmtiling]

I see codex have a product where they claim you can tile anhydrate screeds up to 95 % moisture content .

would you post a link please

 

[Dumbo]

would you post a link please

I cant i read it in the tile and stone journal .

 

[Flintstone]

Yeah I saw that too, early days for these products.

 

[hmtiling]

Did it give any more info? As in if it's a system like the other one or just an adhesive?

 

[Flintstone]

 

[Dumbo]

Gave it a quick read but I think it' a couple of primers then normal adhesive ( cement based I think ) . Talking to a codex rep once and they are not keen on gypsum adhesives .

 

[Flintstone]

Is that because they don’t sell one?

 

[One Day]

I still want to know what happens to all that moisture which gets stuck under the primers with these type of systems...

 

[Flintstone]

Very slow controlled release out of the surface and through the grout, mark

 

[Dumbo]

Very slow controlled release out of the surface and through the grout, mark

How is that going to work with a topical sealer on stone . Norcross couldn't really give me a satisfactory answer when I saw their reps back a while

 

[Flintstone]

Through the grout?. I suspect these products haven’t been put through there paces with all materials and situations.

 

[Dumbo]

Through the grout?. I suspect these products haven’t been put through there paces with all materials and situations.

Not with a topical sealer it will trap moisture in . Perhaps @Lithofin BOB can confirm or deny this.

 

[Ajax123]

This has been around for a while now. Norcross also do one called pro gypbase

 

[Ajax123]

I still want to know what happens to all that moisture which gets stuck under the primers with these type of systems...

It will escape eventually but is effectively trapped. These systems work by changing the nature of the screed surface making it harder and stronger so that it is not affected by the moisture. They also prevent the migration of moisture borne sulphates so are not prone to ettringite failure. I have not seen this one used personally but the norcross system works exceptionaly well and has been approved for use on GYPSOL screed which is the UK leading anhydrite screed by a long way.

 

[LM]

Codex are a sister company of Uzin flooring products and in that field they’re the nuts so I wouldn’t be quick to dismiss it.

 

[hmtiling]

I got a price for the norcross system. The client waited for the screed to dry

 

[Dumbo]

Here is a thing and correct me if I'm wrong but schluter claim you can put ditra onto a gypsum screed up to 2% by volume . Does anybody know what that is as a rh figure .

 

[Ajax123]

Here is a thing and correct me if I'm wrong but schluter claim you can put ditra onto a gypsum screed up to 2% by volume . Does anybody know what that is as a rh figure .

Schluter say so But heres the thing... what do you stick it down with at that level of moisture. The anhydrite manufacturers say for a liquid DPM no more than 1.5% and they generally stick to most things.

 

[Ttt1601]

I've used ultra tile supress it, a couple of times now, not on anhydrate screed on s and c screed early with high moisture content, and it worked a treat, still solid as, one was with travertine too, I did also put a decoupled down but no moisture shown through and all good 7 months later

 

[hmtiling]

Here is a thing and correct me if I'm wrong but schluter claim you can put ditra onto a gypsum screed up to 2% by volume . Does anybody know what that is as a rh figure .

I've spoken to schluter a few months back and they said they can't provide a guaranteed fast track system for gypsum screeds.