Help with underfloor heating

[DHTiling]

If the mat is not self adhesive then you can tape it down at regular intervals or use a hot melt glue gun..

The probe goes in between 2 runs of cable and the mat cable should not run across the probe length.. so it goes in between the runs and out into the floor area to about 400mm and just groove the insulation boards to install it..

you will find installation instructions here>>> http://www.uheat.co.uk/pdf/mg_md_underfloor_heating_mats_manual.pdf

 

[mdj101]

Well I received my mats from uheat, I was surprised to find that there was nothing to secure them to the floor as it seems that most companies supply this or its pre attached to the mats.

I was also concerned when I put the mats down and the 10m mat had gaps of 70mm and the 2m mat 50mm.

A call to uheat didnt install much confidence and they had to contact the factory, they called me back a little later to confirm that the factory had said this was fine, but I'm assuming these get imported from China and as an importer myself I know that the Chinese will agree and tell you anything, it's not in their culture to say no or admit something!

I will be doing temperature checks once the system is commissioned and if its different I know I wont be paying to have it sorted!


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[Daz]

I'm confused by your comments, however, that is not to say they not factual.

I installed 13sqm (1 off 3sqm & 1 off 10sqm) of 160W mat from Uheat yesterday. The mats were the best self adhesive type I have used, much better than the tape systems, and the wires were all evenly spaced on both mats. I've never had an issue with Uheat customer service and always received an answer in the one telephone call.

Hmmm, just seen your pic and I see your dilemma. I'm sure you will still receive an even heat provided the mats are both 160W per sqm.

 

[mdj101]

Both mats were 200w in blue elektra boxes and they were not self adhesive at all.

 

[Daz]

I know Uheat have only recently introduced self adhesive mats, so I must have touched lucky. I've got a 200W system to do in a couple of weeks, but that doesn't help you now :mad2:.

The last non-adhesive mat that I did, I used a glue gun to stick it down.

 

[mdj101]

I used tape and ran it along the edges of the mat

 

[Scott]

Not had to do one withput tape already attached, must be a nightmare without it :yikes:

 

[paul flight]

so if you saw the problem why did you then go ahead and fix the mats and the cover with laytex??? the gap between the wires should be 70mm all over if you had any doubt you should have returned the and used another supplier of heating mat. if you tile over these and you the get a hot spot of 2 sq mtrs what then?? it will prob be a little bit warmer at that point. but will you put up with it or make a fuss :mad2:

 

[diamondtiling]

I used tape and ran it along the edges of the mat

Well thats the wrong way to install a mat, how many of them have you done?

 

[mdj101]

This is the first one, as far as i can tell the fixing is only there to stop the mat floating when you cover it in latex, which it seemed to do the job.

I must admit I expected it to be self adhesived or at least come with fixings.

Like I said, I called uheat and they said it was fine, so I went ahead and carried on.

but we will see.

 

[mdj101]

so if you saw the problem why did you then go ahead and fix the mats and the cover with laytex??? the gap between the wires should be 70mm all over if you had any doubt you should have returned the and used another supplier of heating mat. if you tile over these and you the get a hot spot of 2 sq mtrs what then?? it will prob be a little bit warmer at that point. but will you put up with it or make a fuss :mad2:

If a company told you it was fine and then it wasnt would you put up with it?

 

[diamondtiling]

The mats are manufactured to different spacings, some go to 50 mm for optimal heating, I have used uheat at least 3 times and never had a problem, I must have fitted hundreds of UFH kits, I suspect that you might have submitted incorrect sizes to uheat in the first place.

 

[mdj101]

How could i have given them incorrect sizings?

Both the mats have the correct labels on them aswell.

 

[mdj101]

may be the 200w mat should be 50mm and the 2m kit is correct, but the 10m kit is labelled incorrectly? the label on the box was fine too.

 

[Daz]

Were the resistance readings within the correct tolerances prior to installation?
If so, then all will be fine .