Make life easy, search the forum.

Discuss Hardiebacker under Insulation boards? in the Tiling on Underfloor Heating area at TilersForums. USA and UK Tiling Forum

Bathfix Bob

TF
Arms
Reaction score
340
Please checkout the following advertisement.
Hi Guys, in my current bathroom job its been a late decision to have an electric underfloor heating mat.

Its 18mm chipboard well screwed down and I've bought, cut and laid 6mm Hardiebacker but not fixed or glued it yet.

Shall i do away with the Hardie and just screw and glue 6mm insulation boards down or shall I glue and screw hardie as normal and then insulation board on top? I want to keep the hardie really but I suppose I can use it on my next job.

Tiles will be porcelain.
 
S

Stef

It will be fine to fit ufh on top of Hardie, not ideal as you would be better with thermal.
Might not perform as efficiently but it will be pennies of an extra cost.
 
H

hmtiling

I was under the impression Hardie was a terrible insulator hence it being specified for overboarding wet ufh sometimes
 
OP
B

Bathfix Bob

TF
Arms
Reaction score
340
Thanks guys,

It's seems some people love insulation boards and some hate them, my local independent tile shop dosnt sell them and whenever I ask they say theres no call for them as everyone tiles on Hardie.
I have to go to the tile Giant in the next town if I need them.
Can someone explain why it's okay to tile on something so soft like foam cored boards when we do everything we can to make floors rigid?
The smaller the tiles the more likely they would 'sink' into the board.
 

Ttt1601

TF
Esteemed
Arms
Reaction score
400
You've kind of answer your own question there, it's about point loading those thermal boards are are bloody solid if you've got a large surface area on them, but hit them with a hammer you'll go through it
 
D

Dumbo

If I'm correct most insulation board manufacturers are happy with a tile size down to 50mmx50mm although one of the ones that marmox make are happy to go slightly smaller I believe but you would have to check with them .
 
H

hmtiling

If I'm correct most insulation board manufacturers are happy with a tile size down to 50mmx50mm although one of the ones that marmox make are happy to go slightly smaller I believe but you would have to check with them .
Agree, although that may not be the case once latexed
 
D

Dumbo

I was thinking you were talking of a decrease in point loading Tile size . Ie increase issues
 

Reply to Hardiebacker under Insulation boards? in the Tiling on Underfloor Heating area at TilersForums.com

Or checkout our tile training advice or the Tile Standards

This website is hosted and managed by www.untoldmedia.co.uk. Creating content since 2001.

New Tiling Questions

UK Tiling Forum Stats

Threads
66,600
Messages
866,701
Members
9,510
Latest member
BIG_AL
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock