Bathroom wall insulation

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30 Sep 2007
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I'm about to start a bathroom project which involves fixing shower mixer valves into a solid brick external wall.

I'll be putting 25mm insulation on the wall + 12mm tile backer board + Tiles/adhesive.

The mixers are 70mm deep so will project back into the wall. There will also be a number of pipes set into the insulation/wall.

Pic: View media item 59351
25mm is the thickest insulation I have room for on the wall as a whole but I could chase the wall at the back of the mixer further if that helped.

Question is, am I going to have condensation/mould problems and should I be doing it differently?
 
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Put an extractor fan in as well, then you have done all you can possibly do to reduce any condensation.
 

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