BAL bal flex bone 2 easy

[Ajax123]

were sanding to allow the hard layer on the surface to be removed as this will allow drying to happen quicker were running 4 big fans 24hrs a day to circulate the air so allowing drying faster.
the hard surface layer slows down drying as it helps retain the moisture.

Sadly the presence of laitance on anhydrite screed preventing drying is also a myth. It was disproved some 3 or 4 years ago in some independent testing that was done. the testing looked at drying anhydrite screeds specifically in both normal and force dried scenarios. It was demonstrated that removal of laitance made no difference at all. It also looked at drying in comparison to that of sand and cement screeds and found that they dried at almost exactly the same rate per mm of depth.

no evidence to show it dos not either. but air circulation dose

Air circulation most definitely improves drying of all screeds. As does increasing the temperature eg with UFH. Temperature though is almost irrelevant if there is no ventilation as theres no where for the moisture to go.

 

[Just Rizzle]

This mushing thing is a big fat myth...

This mushing thing is a big fat myth...

I think I will wait until there have been a few failures. Not necessarily the fault of the mat but instalation ,
He'll is that bal tech .
Oh right so you did that with it , should of been done like this then it would of been ok .

just is thought some dogs cant be taught new tricks.

 

[hmtiling]

just is thought some dogs cant be taught new tricks.

You don't even know what it's suitable for

 

[Dumbo]

just is thought some dogs cant be taught new tricks.

Personal insult just because I have opinion . Nice , I not saying you're wrong I'm just have a more cautious approach with new products , after all bal claim, or used to claim you could tile floating floors with fast flex ,there have been a few failures with that ,but they said it Could be done.

 

[CJ]

Is there any documented failures so far???

 

[Dumbo]

No but if there were because it is bal it would whatever the circumstances be installer error

 

[Spud]

on a warranty and technical basis there is not international standard for the manufacture or performance of uncoupling matting , there is for crack isolation membranes so flexbone falls into uncharted territory , I was always lead to believe that all building products in the uk need to be CE marked which means they have been manufactured to an internationally recognised standard , I may be wrong or misunderstood the regulations but I thought that was the case in the UK

 

[Flintstone]

If you use flex bone and the full bal list of products and the floor fails, do bal cover all costs or do they just refund the materials cost ?

 

[Subrisi]

Just read these after using flexbone. In my experience I now totally agree about floor deviation. This floor was pretty flat but 2 weeks after tiling there is a 'pop' when you tread in a certain area and I can see the grout beginning to crack. I'm certain it's due to a depression below on the new cabredeck floorboards. I will probably go back to Durabase ci matting next time (or similar) as the initial bed of adhesive prevents this issue. Not worth risking it to have to redo IMO.

PROS - quick, overlap joint is way better as Durabase system causes a hump.
CONS - Floor must be perfectly flat, need to lay out and leave overnight to flatten as edges try to lift otherwise even with correct sized tiles as per BAL recommendations.

A Durabase mat with a Flexbone overlap is the perfect solution I think.

 

[Direct]

hi all has any one used this decoupling mat by BAL yet. Was talking to there REP today and am thinking about using it on a job which is getting an anhydrite screed.
there seam to be alot of advantages to using this product but need to know your views

 

[Ajax123]

Is it heated and natural stone? in which case I see no reason not to. if not then its not really necessary.

 

[macten]

I've got 130m2 using flex bone later this year - the floor is anhydrite that never had the laitence removed and currently has LVT installed. I'll report back on this thread when I do it.

 

[Ajax123]

I've got 130m2 using flex bone later this year - the floor is anhydrite that never had the laitence removed and currently has LVT installed. I'll report back on this thread when I do it.

Has the lvt failed?

 

[macten]

Has the lvt failed?

No it’s all good. I’ve already had BAL out to come spec the job.

 

[Ajax123]

Laitance was either removed or did not need removing then. There are so many myths and misinformation about the removal of laitance.

 

[macten]

Laitance was either removed or did not need removing then. There are so many myths and misinformation about the removal of laitance.

Laitance definitely not removed.
Agree about the myths and misinformation re laitance removal and tiling on anhydride screeds in general. It’s the reason I’ve always avoided them. Not worth the anxiety.

 

[macten]

Laitance was either removed or did not need removing then. There are so many myths and misinformation about the removal of laitance.

Apologies Ajax123,

You were quite right the laitance had been removed. After old kitchen was ripped out I could see exactly what was going on.
I finished the job end of last year. BAL guys came out to moisture test the extension and got the go ahead to crack on.
Did spend 4 days grinding the odd high spot and used 5 bags of SLC to level areas where old units were till I was happy and confident enough it was all in spec for using the Flexbone.
How did I find the Flexbone?
Expensive but brilliant product. Would definitely use again.

 

[macten]