Gyvlon low laitence screeds

[Ian]

There are quite a few threads regarding this type of screed and there seems to be a mixed response on the correct adhesive to be using. I had a read of a bag of Mapei proflex today and although it is cement based, it says providing the substrate is sanded, hoovered and primed with eco prim, it is a suitable addy. I was under the impression that a gypsum based was the preferred adhesive to be using. Am I getting my screeds and addys mixed up or is there more than one correct way to be going about this? Thanks as always, Bri.

 

[DHTiling]

Cement based adhesives are fine Bri.. if the prep is done correctly, but gypsum based adhesives do not react with gypsum screed.. so that is the advantage.. if their is no reaction risk then that is the best adhesive to use but cement based can be used no probs ... it is all down to the prepping and correct priming..

 

[Ian]

Thanks for confirming Dave. This subject seems to have alot of grey areas!

 

[DHTiling]

It does ye but if a Gyvlon training day is within your travelling distance then please do attend.. well worth it IMO..

 

[aph257]

I went to a training day presented by Alan (Ajax) last year, which was vvvery helpful, although i've still to come across a anhydrate floor yet. As Dave says above you can use cemant based addy as long as the prep in done right, but tbh there are more and more gypsum addy's on the market now, i'd use one of them, saves all the hassle/doubt etc.

 

[Ian]

Which brands do gypsum based? I remember someone saying they had to get some from France?!!!! Maybe I'm going mad!

 

[Stewart]

Pretty sure Webber do one...

 

[Ian]

Pretty sure Webber do one...

Thats the one I remember Stewart. Seems a bit extreme to have to import it!

 

[aph257]

Alan (Ajax) will be along to gives us some outlets. maybe!

 

[nybor62]

creative impressions do one,

 

[DHTiling]

Pretty sure Webber do one...

They did import some from weber france but at present they are making their own in the uk and as soon as it is ready they wil announce it.. so for now it is GBA from creative impressions and another i can't remember the name.. but Ajax knows it.. and there is Kerakol ideal 40 but beware on that one as i tried it and it failed and the back up from tech was appalling., but i have heard it is fine without the use of a membrane.

 

[Stewart]

Just been informed by Lee from Twitter, that Weber don't do their weber.col anhydrite anymore.

 

[Tabby Cranks]

I beleive Kerrakoll do a cement based that can be used without priming. Not sure how that works.
I'd be interested in a one day Anhydrite course, where do I sign up?

 

[advancetiling]

BAL do a 1 day one with lafarge givlon.Dave Rowleys the guy from BAL.Theyre nationwide but as of this year i think its around £30 now due to people signing up then not turning up.You get some BAL buckets and some variset i believe

 

[DHTiling]

Just been informed by Lee from Twitter, that Weber don't do their weber.col anhydrite anymore.

They do.. just not in the UK.. but like i said they are working on a uk version.