Kitchen/Bathroom wal tilesl insulating backer boards info

[TenterdenTyler]

Hello all you tilers,
I have a kitchen to tile with three outside walls and a bathroom with two outside walls. The house supposedly has cavity wall insulation but I want to add more insulation with thin thermal wall tile backing panels. I am planning to use standard ceramic tiles. Are there any suitable 4-6mm backer boards out there please?
I have so far only found Marmox backer boards in 4 & 6mm. Would these be ok or are there any other better/cheaper ones about? They would be fixed onto plastered walls with adhesive.
Many thanks, Tenterdentyler.

 

[White Room]

Why put do you want extra insulation on the wall at 4-6mm thick..

Insulation attached to plasterboards is about 20mm thick to make any difference.

Hi and welcome..

 

[The Legend; Phil Hobson RIP]

Hi and:welcome:

 

[DHTiling]

Hello and welcome...

 

[Ian]

Welcome along

 

[TenterdenTyler]

Hi Whitebeam, thanks for the response.
All the kitchen walls are plaster on brick, not plasterboard. One wall is a party wall with the garage & has no cavity wall insulation as there was no external access when it was done. Last winter we suffered condensation & mould on this and other walls behind the floor units due to temp difference. Also the bathroom & kitchen are on the north east corner of the house. While not wanting to use 20mm insulation I think that even 6 mm will help. We are early retirees and I am hoping to accomplish this with minimal cost.
Many thanks, Tenterdentyler

 

[Aston]

hi
marmox, wedi, shluter, dukkaboard etc are all good but unfortunately they are at the top end in price due to their thermal performance, water resisitance, weight and strength...they are the best so i suppose that reflects in the outlay. i would look at the overall peace of mind compared to the initial outlay. they'll solve your problem of insultation and moisture resistance.

ed

 

[Max@ableskills]

Hi and welcome to the forum