A big flooring problem!

[Aston]

tiles lose there grip by either movememt or lose/insufficient bond.

the floor was laid early 2010? then tiled october 2010? i think scottley is barking up the right tree regarding sealing the floor.

thats a long time to leave the floor prior to tiling (ie to dry out), especially after the ufh had been commisioned..i personally think that the dural/ditra has lost its bond in places causing loose areas. this has caused hollow spots and the tile/tiles have been able to move up and down when walked upon and eventually debonded where the ditra has lost its grip to the screed.

thats the only thing i can think of unless alan (ajax) can read this and give his opinion on the fibers used in the screed. although fibers strengthen, if they allow no movement, then the screed can stress.

thats the best i can offer on this given the info provided
ed

 

[The Legend; Phil Hobson RIP]

:dizzy2:As above I am totally confused everything seems to have been done correctly, Dural is a good product imo. I will be very interested to know if the tiles have de-bonded or the mat?

 

[hpandlou]

Floor was dusty, but I think it was cleaned/primed before adhesive used - I don't know for sure, but tiler and I have talked about the need to prime different surfaces, eg. slab when screed is laid, so I am making an assumption.
Thank you

 

[DHTiling]

Hi..

Can i ask was this screed laid as one piece or was it tied into an original floor area. and were the tiles over the old and new areas..?..

So what i mean is this 2 separate floors.. old and new.. or just one new floor area.

 

[hpandlou]

One new floor area - the floor slab was laid in 2 'hits', but the screed was laid over the 2 at the same time. The loose tiles are all over.
Thank you

 

[Brinkley]

what was it primed with?

 

[hpandlou]

I don't know - I would have to ask the specific question, which I will do when I get the tiler back again. Plasterer who laid the screed coming in the morning and I need to get his opinion before I talk to the tiler again.
Thanks you - I will let you know if I find out!

 

[vosnack]

It might be the worst use of PVA ever

 

[Scott]

It might be the worst use of PVA ever

Id doubt it, the guy seems to know what he is doing with the materials and knowledge he has used. BUT you never know!

It could be the UFH leaking? Im too impatient waiting for he answers, i wanna know now! Go take up a tile

 

[bootsmckiber]

Did you happen to seal both sides of slate before setting them?That would affect the bonding from tile to ditra/dural.

 

[bootsmckiber]

In your opening letter you said" cleaned and wiped on the reverse",wiped with what?

 

[The D]

this is puzzling me:mad2:

 

[tommyzooom]

One new floor area - the floor slab was laid in 2 'hits', but the screed was laid over the 2 at the same time. The loose tiles are all over.
Thank you

Can you clarify, was the screed built up in two layers? If any one of these layers were too thin, then it could have de-bonded.
Apart from that everything seems to have been ok, Don't be too hard on your tiler

 

[White Room]

Originally Posted by hpandlou
One new floor area - the floor slab was laid in 2 'hits', but the screed was laid over the 2 at the same time. The loose tiles are all over.

Why not one hit for the floor size

 

[kiwi Mark]

This exact thing has happened to me I was looking to post this problem.Tiled a barn conversion in Oct sand cement screed primed with acrylic ,laid dural with my own brand ady single part flex and then laid 600x400 slate using customers adhesive( sovereign single part flex). Waited for over a month while continued to finish rest of barn ,2 wet rooms hall etc. In this time kitchen was installed and floor was fine.When returning before xmas to put a finshing seal on this is when I noticed the noise under some of the tiles.Only a few down one side of room but I think it may get worse going back to check and lift a tile.Also noticed 2 cracked tiles in identical corners either side of the slab that the aga sits on ? Strangely the hall and wetrooms are fine the only difference being I used my adhesive (granfix).I am aware that possibly the underfloor has been turned up straight away (the floor was fine before heating was turned on) need to get this confirmed.Spoke to Sovereign they couldnt help much but will come out to look but did offer me free ady ,first time Id used there product.Not looking to blame anyone yet just need a solution ,have been using all my products for years with no probs ,looking forward to replys PS screed was probably the worst I have seen all over the place.

 

[White Room]

I'd used Sovereign Porcelflex for a long time, not now though and found it to be good adhesive

 

[kiwi Mark]

Just trying to go through all the possibilities its got me stumped as to why only one room has done this. Sovereighn tech said this could be very hard to find whats at fault

 

[White Room]

Sovereign tech could be right, they do alot of specialist products

 

[hpandlou]

Floor slab built as an extension before 2 supporting walls of existing kitchen removed. Then floor of original kitchen (just dirt with quarry tiles) dug down to building regs specs. Screed laid as one over the 2 - screed was VERY good.
Thanks

 

[hpandlou]

Unibond primer - found that out today!

 

[hpandlou]

Id doubt it, the guy seems to know what he is doing with the materials and knowledge he has used. BUT you never know!

It could be the UFH leaking? Im too impatient waiting for he answers, i wanna know now! Go take up a tile

Can't be leaking - we have a fully pressurised system and there is no loss of pressure - we would have known!
Thanks

 

[mikethetile]

how did they maintain the damp proof between the two different pours

 

[hpandlou]

Did you happen to seal both sides of slate before setting them?That would affect the bonding from tile to ditra/dural.

No, the tiles were sealed after laying - tiler has done this for 30 years with fab references - I can only trust him!
Thank you!

 

[hpandlou]

Can you clarify, was the screed built up in two layers? If any one of these layers were too thin, then it could have de-bonded.
Apart from that everything seems to have been ok, Don't be too hard on your tiler

The screed was laid in one 'go' to a depth of 65mm.
I'm not being too hard at all - I know he did a good job, I just need to know what has gone wrong so it can be rectified properly. My husband is speaking to Dural to see if they can shed any light and I also intend to talk to the tile supplier as well. Will update!
Thank you

 

[Scott]

Not the best primer