gyvlon screed.

[andytiler]

hi all,
i;m preparing to tile onto a gyvlon screed, can anyone recommend a moisture meter for testing the humidity and where to purchase one,
many thanks,
andy:mad2:

 

[Gazzer]

There is some on Ebay for a decent price.

http://www.ebay.co.uk/itm/Digital-F...496?pt=LH_DefaultDomain_3&hash=item1e7e890f80

http://www.ebay.co.uk/itm/Digital-F...845?pt=LH_DefaultDomain_3&hash=item232ec2bdb5

 

[Stef]

That's a good price.

I've got 1 sat by in a shop in Glasgow that I haven't picked up yet, almost double that price!!

I had a headache for over 2 weeks trying to sort out a Gyvlon screed, it's now getting left till mid October.

 

[White Room]

Thats the first time I've actually seen one....as far as I remember.:yesnod:

 

[Gazzer]

That's a good price.

I've got 1 sat by in a shop in Glasgow that I haven't picked up yet, almost double that price!!

I had a headache for over 2 weeks trying to sort out a Gyvlon screed, it's now getting left till mid October.

I just lost a Gyvlon job this week due to the builder needing to have floor coverings for a show flat. Floor was 92%RH so I wasnt about to do it.

 

[Stef]

I just lost a Gyvlon job this week due to the builder needing to have floor coverings for a show flat. Floor was 92%RH so I wasnt about to do it.

You will get it second time round as someone will tile it & it won't last a year!!

I spoke to Mapei technical & they told me "You don't have to worry about RH as that's only for carpets, wooden floors etc, it doesn't have to be 75%.

Told this story to Mark @ Gyvlon yesterday & he was shocked to say the least..

 

[Gazzer]

Lol well this guy needs to get temporary coverings down for the show flat...what happens after is anyones guess.

 

[Stef]

Could put a nice wooden floor down & watch it turn black in the next few months..

 

[Mark S]

The 2 recognised by BS as being the most accurate are a Hygrometer box, or carbide bomb.
Hygrometer take 36 hours to get reading after putting the box in place, Carbide bomb means breaking a bit of screed out to crush to a powder to the measure the moisture, but takes 10 minutes.
Both types are available I believe from F Ball, or most good tool hire shops.
An oven test on a section is by far the most accurate, but again requires removing a piece (2-3sq cm), and again takes 48 hours in the oven, to dry and weigh etc.
An unheated gyvlon floor can have a dpm aplied at 87%RH
PM me for more thoughts

 

[Stef]

Good to speak to you on the phone the other day Mark.

 

[DHTiling]

Is it heated Andy ?

 

[andytiler]

There is some on Ebay for a decent price.

thanks for that sir ramic, nice user name by the way

 

[andytiler]

Is it heated Andy ?

no mate only by the sun through glass roof its 50mm thick and has been down 30 days

 

[DHTiling]

It is no where near dry then..

 

[Diggy]

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