6mm Hardiebacker

[Gazzer]

Hardibacker and the likes are not to add rigidity they are to provide a more suitable base to tile to.
Tiling directly onto wood will always be problematic, wood is a live material and as such will stretch, shrink and deform in cetain conditions ie Heat, cold and moisture....backer boards dont.

 

[Gazzer]

your original question was "Is the 6mm Hardibacker board from topps any good as an insulation board for elec ufh"

My answer, very little if any at all. I had the same question with a rep for "No More Ply" a while back and i couldnt get a definate answer from them in terms of heat loss but they did admit it wouldnt be the same as insulation boards.

 

[Gazebo]

Thanks Sir Ramic, you have answered my initial question which i am thankful for, is it best to post my other question asked in this thread seperately for an answer or can you advise on that also.???????

 

[merlecollins]

HBB will not offer any insulation worth thinking about - I did the exercise of finding out myself a few months ago :smilewinkgrin:

Check out the U-Heat website and take a look at the dedicated insulation boards they sell