Gyvlon floor....

[DHTiling]

Can you check out this plz mate.. this is an option i see as a great adhesive for adhering membranes with no de-bonding issues.

These adhesives just need a porous substrate and do not have a mass water content

 

[Yorkshire Tiling Services]

Warning
just like adhesive manufacturers supply good products,they cannot control how they are used.
Same with Lafarge,they only SUPPLY gyvlon screeds,they do not lay them all.
If ,laid wrong wiv 2 much water then exces laitance might happen.
Test with key or something likefirst.

 

[DHTiling]

Nick.. have you seen the newer LL screeds.?

 

[Ajax123]

Warning
just like adhesive manufacturers supply good products,they cannot control how they are used.
Same with Lafarge,they only SUPPLY gyvlon screeds,they do not lay them all.
If ,laid wrong wiv 2 much water then exces laitance might happen.
Test with key or something likefirst.

The new generation LL screeds are more robust to this but you are correct that if significantly over watered they can cause issues. Testing with a key is not really an appropriate test as it will be quite misleading. When you put a medium pressure onto the point of a key you generate a huge point loading. Press hard enough and you will be able to scratch up even a top quality Gyvlon screed.

It it usually failry obvious when the screed is overwatered e.g the attached pic. This was poured at around 90mm over the specified flow tolerance. This equates to around 300litres of water more than was required in the batch. OUCH!

The water has the effect of segregating the consituent materials - same as overwatering levelling compound.

 

[Gazzatile]

You live and learn Thanks:hurray:

 

[TT Tiling]

ajax123 your the man ,i know through laying on them my self its got to be right ,sanding sealer and dry , and with the right makes of everything ,good luck with the floor

 

[Yorkshire Tiling Services]

Had a good meeting with Alan Jackson from Lafarge a while ago. The problem is,that altough they supply LL screeds,the sad fact is that many are not being installed according to spec.. causing excess laitance.
Also to add, there are also other Lafarge screeds out there,which are not directly supplied by the Gyvlon arm of the company. One such is Lafarge screed 10. This can be confused as Gyvlon... do not want to go into too much detail publicly.But the screed in question even got Lafarge confused as to what it was !
The fact is that even if a screed is supposed to be LL, then it should still be looked at closely to ensure that is so. I had a Gyvlon LL screed to tile last year,that still needed 3mm laitance removing before it could be tiled.
i got a specialist company in that I know... they diamond abraded a 60metre floor for me in 30 mins... totally dust free and flat.
In an ideal world we could trust LL, BUT I do not think we are there yet.
The way forward is for tilers to do their own screeding. Lafarge are interested in training tilers to do just that !
I,myself am going on a Lafarge Gyvlon screeding course in a couple of weeks.Another string to my bow. Have already got a few contacts lined up for work.

 

[DHTiling]

3mm is too much to remove from any screed,, that can take it below recommended thickness.. at most laitence should be around 1mm to 1.5mm.. excessive watering can effect as we know but a slump test should be done to determine the flow rate before the pour.

So many normal screeders think they can do flow screeds and the cannot.. some really bad pours being done at present..

 

[Colour Republic]

Had a good meeting with Alan Jackson from Lafarge a while ago........

I thought Alan Jackson and Ajax123 were one and the same

 

[Ajax123]

I thought Alan Jackson and Ajax123 were one and the same

damn - that's me cover blown.........

 

[simonb43]

HiYrkshire Tiling, how do you get on a screeding course for the Gyvlon mate ?? Any links to a website available ?

 

[phillacey]

Hi Ajax, do you have any contacts for gypsum adhesive please as have not been able to track any suppliers down.

regards

 

[nybor62]

try this company phil
Broken Link Removed

 

[DHTiling]

Hi Ajax, do you have any contacts for gypsum adhesive please as have not been able to track any suppliers down.

regards

Weber also do one..

 

[Ajax123]

Get hold of Sab at Creative Impressions for GBTA
Get hold of Mark Birch at Weber for Anhydrite.col (no point speaking to anyone else at this stage at Weber
Get hold of Darren Silver at Forbo Flooring about Alphycol.725

Contact numbers should be available at the websites for each company but if you struggle I can let you have some of them. I don't want to post mobile numbers on the forum without permission.