Help!! Has the underfloor heating been installed wrong!!!

[ben2579]

Chipboard is just bad in bathrooms full stop. It swells waaaaay too much when it gets even the slightest bit of damp on it.

18mm marine ply minimum. But as it's a bathroom I'd go with the cement boards as suggested.

It wouldn't have been too much of a maul if it's such a small area to simply cut out the chipboard and replace with ply, then overboard.

The heating mat is fine to be used in bathrooms though providing the thermostat is the right one for bathrooms, or is placed outside the bathroom.

thanks for everyones help!! I am meeting with tiler tomorrow to discuss way forward - he did for what it is worth offer through his company a guarantee on any work (although i am well aware of the value of guarantees in this economic climate). I also have an independent coming to look at the work tomorrow for a 2nd opinion. But anyway excellent forum and I will use again in the future!!!

 

[Gazzer]

What did he say about the probe ?

 

[Muse2k8]

And are you sure it's chipboard and not ply?

 

[Dan]

Bloody hope so now we've caused all this! haha

If it's ply we're laughing! Finish it and pay the guy! :lol: happy days.

 

[Gazzer]

Heating mats can have an undesirable affect on timber especially chipboard IMO that is why I always use a backerboard.

 

[jay]

Still leaves the question regarding the probe

 

[ben2579]

Hmm forgot to ask about sensor - think he said something about placing it undermat?? Will check.

 

[kilty55]

where is the probe ben?

 

[kilty55]

if he has does it tail out at the box on wall?

 

[ben2579]

Currently probe not fitted and on side of room but he said he was just going to run it in a few cm and bring out at the hole left for it by the electrician

 

[Gazzer]

A few cm ??? Hmmmmm

 

[ben2579]

I think that was what he said but the mat is only 50cm across.

 

[Tregah]

if it was my job i would 6mm cement sheet it glue and screw .lot better substrate to tile on and will help contain the heat

I agree with Jay. Just done a similar job, used 6mm cement backer board worked well.

As regards to staying with him, whats his work been like to date??

All the best

 

[Discount Tile Supplies]

Why not use ditra or N&C plastic ply? With good S1 adhesive?

 

[Dan]

Just bumping some threads in the underfloor heating forum. You can now find and search for both electric underfloor heating and water underfloor heating threads. By the way, if you feel some of the threads you want to be seen at the top of the forum need to be bumped back, for the next month or so from now, feel free to do that. Although it's not usually something we allow, whilst we're going through this process of changing over forum software, we see the need for this to happen.