Not suitable for UFH.

[Sean Kelly]

Got onsite yesterday to find that the builder had laid the UFH mat, then covered it in SLC. I had never seen SLC this colour or this dusty before. A lot of the cable was sticking up from the SLC so I decided to sweep the floor and prime the floor twice. Then I poured 3 bags of Mapei latexplan over the top. I feathered it to the edge of the room (leaving about 5% of the room with the previous SLC showing).

I then found a few empty bags of what the builder had used. Sealocrete floor levelling compound. It says 'Not suitable for UFH'.

I arrived for work today to find that the SLC I poured is still drying out. I had to come home because I can't tile on it. Can't get back till Wednesday now.

So what are the consequences of using the Sealocrete SLC with UFH?

Cheers Sean

 

[White Room]

Got onsite yesterday to find that the builder had laid the UFH mat, then covered it in SLC. I had never seen SLC this colour or this dusty before. A lot of the cable was sticking up from the SLC so I decided to sweep the floor and prime the floor twice. Then I poured 3 bags of Mapei latexplan over the top. I feathered it to the edge of the room (leaving about 5% of the room with the previous SLC showing).

I then found a few empty bags of what the builder had used. Sealocrete floor levelling compound. It says 'Not suitable for UFH'.

I arrived for work today to find that the SLC I poured is still drying out. I had to come home because I can't tile on it. Can't get back till Wednesday now.

So what are the consequences of using the Sealocrete SLC with UFH?

Cheers Sean

If it's tiled and it goes belly up it will be YOU who will be chased to put it right, personally i would leave well alone unless it is sorted out.

 

[Rookery]

I agree. Show the builder the bag and say 'cant you read you *******' then don't touch it 'til its sorted.

 

[Time's Ran Out]

Seems a bit late for walking as 3 bags of Mapei latex plan have been poured over the top!
If the Sealocrete doesn't contain the fibres and is only suitable a a surface smoother ie 3mm thick then it will most likely crack, debond and come loose with the temperature variation that will be happening. There may not have been any priming of the substrate prior to the Ufh and leveller going down and you don't know what ratio of water/powder mix was used in the builders attempt at covering the electric cables .
The next step is yours!

 

[TJ Smiler]

Think i would be inclined to approach the customer and let them see what the builder has used, point out you didn't notice he had used the wrong stuff until you found one the sealocrete bags when you were clearing up. You just assumed that the builder knew what he was doing, right? i mean they are experts in tiling and PVA use.

 

[stusgsx]

I wouldn't touch it

 

[radim]

if you wouldnt find that bag and just tile over it and it failed who is to blame? the builder me thinks. tell the builder about **** up and let him decide how to fix it.