Help - Elcetric UFH laid without sensor

[HC2005]

Hi all,

I'm new to the forum but very much hoping you can help with a problem I've got.. We had underfloor heating mat installed by our builder (at the time) earlier in the year but didn't install the thermostat as we were waiting for the new Warmup unit to come out. The mat was laid under a SLC and then tiled over.

Now that we've come to install the thermostat units I've discovered that the builder didn't install the sensor cable or tube ready for it to go into. Having spoken to Warmup I understand that the sensor is absolutely necessary which presents us with our problem.. The whole kitchen and bathrooms are now finished and tiled, after a lengthy extension, so I'm trying to work out what would be the best way to solve this problem without causing too much disruption.

I was wondering whether it may be possible to just create a channel along the grout line and re-grout with a sensor laid in it - obviously not ideal but trying to think of any options that don't involve hacking up the tiles and potentially damaging the mat underneath.

Any advice or suggestions greatly appreciated before I resort to hacking up the floor!

Thanks in advance,

 

[Gazzer]

I have had to do 2 of these due to the "tiler" "builder" not laying the probe. I have used the method you describe and all has been well. Its not ideal but sometimes when the floor is done and no one wants the risk of removing a tile and possible damage of the heating wire then its a possible answer.

 

[peteablard]

I kow I'm stating the obvious but be careful when digging out the grout not to go too deep and damage any wires

 

[Brian the Tile]

the sensor on the heating systems i have used are to big to fit into a tile joint ,check beforehand with warmup to make sure it is viable to fit the censor onto the end of the cable first and if yo can i think you may just have to lift a tile very carefully

 

[DHTiling]

The problem is that you are not supposed to have the probe crossing the lay out of the ufh wiring, it must be within the run of cable and not cross it to get a true temp reading, so you will need to know which way the run of cables went..

Seen as the ufh was encased in slc, then i would lift a tile and install how it should be..

 

[HC2005]

Thanks for all of your swift replies..

Having double checked the width of the sensor, I think it will be too big to fit between the tiles after all so looks like I may have to lift at least one of the tiles.

Has anyone got any advice on how best to take the tile up and whether it will be possible to do so without damaging or whether I'll need to replace when re-laying.

Thanks again,

 

[Brian the Tile]

you will have to break the tile smallish hammer tap from the centre outwards,gently

 

[John Benton]

you will have to break the tile smallish hammer tap from the centre outwards,gently

Make sure you remove the grout surrounding the tile you wish to remove otherwise you will almost certainly damage any tiles that border the one you are taking out!