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This mushing thing is a big fat myth...
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.
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.
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.
Discuss bal flex bone 2 easy in the Tile Adhesive / Grout Advice area at TilersForums.com.
This mushing thing is a big fat myth...
Im still waiting for the BAL boys , lewis, simon and some other bloke, to explain why their product is so much more expensive that normal matts? Ditra and the rest are all layered matts and will be more expensive to produce tgan a single matt cut out like dog bones, with some netting glued ?
I mean i know why its more expensive, its just typical being ripped off , but the BAL lads need to just say it instead of offering us out for coffees ;(
I mean i know why its more expensive, its just typical being ripped off , but the BAL lads need to just say it instead of offering us out for coffees ;(
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.
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.
J
Just Rizzle
D
Dumbo
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.
S
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
S
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.
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.
Has the lvt failed?
No it’s all good. I’ve already had BAL out to come spec the job.
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.
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.
Reply to bal flex bone 2 easy in the Tile Adhesive / Grout Advice area at TilersForums.com
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