gyvlon screed.

[Stef]

So a couple of questions from me:

1. What is the rough £/M² of a Gyvlon screed?

2. Who makes the gypsum adhesives to tile on them and how much are they?

Trying to convince the builder that a Gyvlon would be a better method given I've just put down 36 bags of level flex + labour and thats only half the job. ( floor was a shocker )

Diggy

Tile master AnhyFix for adhesive.
Try Lee @ Tiletown for prices.
Not tried it myself but good reports coming back on it.

I've had the same kind of thing with a builder I work for.
Trying to tell them the benefits of a level screed over putting in bags & bags of leveller.

 

[Mark S]

Who laid that screed?
A Gyvlon screed should meet SR2 level every time, its poor workmanship that gets products bad press, and as an industry we need to regulate better these guys.

 

[Diggy]

SR2?

I'd expect SR1 from a flow type screed?

Still SR2 would be better than the SR99 I just put right lol.

Diggy

 

[andytiler]

It is no where near dry then..

no got an hygrometer now so will have more idea next week

 

[andytiler]

So a couple of questions from me:

1. What is the rough £/M² of a Gyvlon screed?

2. Who makes the gypsum adhesives to tile on them and how much are they?

Trying to convince the builder that a Gyvlon would be a better method given I've just put down 36 bags of level flex + labour and thats only half the job. ( floor was a shocker )

Diggy

norcross do an adhesive called tile to gypsum £25-£30 a bag

 

[Mark@Tilemaster]

We use hygrometer's but even these are not 100% reliable on anhydrite screed, the readings can fluctuate from day to day. They are useful as a guide but still not bullet proof. I am lead to believe that drilling a core sample is the most efficient way to take an accurate moisture reading.

I would advise people to follow the general rule for drying times of 1 day per mm for the first 40mm and 2 days per mm for anything above 40mm. As an example, 70mm of anhydrite screed = 100 days for drying. Because all anhydrite screeds are used internally, the drying conditions are usually ideal and therefore the general rule for drying should be quite accurate.

We have used this guidance for the last 5 years with our cement adhesives and more recently our gypsum based adhesive and it has proved successful.

 

[Mark@Tilemaster]

We have a gypsum based adhesive - AnhyFix as mentioned above. We now have a few stockists and if you call the office 01772 456831 we can point you in the right direction.

 

[tilerbarry]

I rang mapei technical about a gyvlon screed and they told me you must never put any finishing product never mind just tiling until you've got 0.5 water by weight result from a carbide bomb test. They said you can't do a RH test on anhydrite screed only sand and cement screed.

 

[Ajax123]

I rang mapei technical about a gyvlon screed and they told me you must never put any finishing product never mind just tiling until you've got 0.5 water by weight result from a carbide bomb test. They said you can't do a RH test on anhydrite screed only sand and cement screed.

They are wrong...

 

[DHTiling]

They are wrong...

And this just shows Alan how uk customers etc get conflicting advice from adhesive companies..

That is so wrong by mapei IMO..

 

[Gazzer]

Stopped calling the info lines, depends who you talk too. I like to see the info in writing!