Anhydrite Screed

[peteablard]

I dilute it 4:1 and it normally takes 4-5 coats

 

[Dave]

After two coats Dave it wasn't absorbing anymore. I had to mop a third off the surface before it skinned over.

4:1 ratio for me , prevents possible skinning as you say ...

 

[Dave]

Weber say 3:1 to 5:1 but 3:1 for me is strong ... So i use 4:1 but like anything else , use what works for you .. 🙂

 

[Ajax123]

Kerakoll and benfer both do slow set compatible materials. H 40 ideal from kerakoll but can't remember what the benfer one is called off the top of my head.

 

[Tile Shop]

What about BAL APD? They say that only needs 2 coats.... 1st 1:1, 2nd neat. Wouldn't most acryllic primers be the same principle? Mapei said the same thing when i spoke to them about Primer G.

Due to a couple of issues we've been advised of, it seems to me that primer and cement addy is still the safest way to go.

 

[Spare Tool]

Thanks for all replies..had thought about uncoupling but this will add around £1500 onto the tiling bill and will probably quote me out of the job and as porcelain tiles I think its a bit unnecessary..
Few conflicting replies here, I would in all honesty prefer a slowest flexible so keracol might be worth looking into not that there's anywhere around here I know that stocks it.
I can easily get hold of Webber and tilemaster. If I do have to use a rapid ady then might as well go with anhyfix, although Paul advises against it and recommends cement, could you tell us the issues you've been advised of Paul?
I shall ring both Webber and tilemaster tomorrow and get them to email a spec for me..

 

[widler]

Ive used anylfix on a 100m2 floor, no matting , porcelain tiles, been down a couple of years i think now, no issues.
Its like glue to spread , but its what i would use 😉
Im sure if u asked tilemaster they would make a batch slower setting for a 90m2 floor

 

[AliGage]

What about BAL APD? They say that only needs 2 coats.... 1st 1:1, 2nd neat. Wouldn't most acryllic primers be the same principle?

I was originally advised to do neat with Weber (not by weber).
Tried it, it skinned and I had to peel it all off and start again.

 

[widler]

If you use any primer neat it will form a skin, without a doubt

 

[Just Rizzle]

andy don't be a fool it a gamble using cement on anhydrate.
just laid 50 sqmts to day on an anhydrita floor using anhyfix. it is a rapid set but as the winters coming the setting time is slower.

dave you've used anhyfix. you've said so one this site. is the reason your not recommending it as the two local suppliers WONT supply you with it and tilemaster turned your account down.
your not giving best advice to andy dave