RADIANT TUBING IN SHOWER

jhansen

I AM RUNNING RADIANT TUBING IN SEVERAL BATHROOMS WITH A TILE IN MUD BASE. CAN YOU RUN THE TUBING UNDER THE RUBBER MEMBRANE OR SHOULD IT BE ABOVE. I AM WORRIED ABOUT OUTGASSING BELOW OR SEALING THE PENETRATIONS IF ABOVE.

Weezbo

er...

did you take a look at a post on this page of some plates in a wall and the bench seat? that seems like it might be a cool thing for you to look at i would say it might depend on the pans your using ...some suggest that its a bad idea altogether..and i can only say i have been very lucky so far with no problems installing it under the shower pan...in a slab. thats me. i may be just fortunate it hasnt gone south ...

Constantin

I'm not a builder...

... but I have seen several diagrams showing the PEX running in concrete below the shower-pan/membrane.

In our house, we've not noticed any outgassing... Plus, I'm not sure where that would come from unless you use a membrane that melts around the design temp of the system.

Bart_2

In all of our installs

we try to cram lotsa 5/16 or 3/8 pex in the shower pan and any bench seats. This kind of comfort is what radiant is all about and customers love it. PVC or Bichathyne (sp?) membranes are just fine as long as you keep your fluid temps inline with a standard light slab job. We try to design around 120 deg. fluid in Gypcrete. Don't throw 170 deg. baseboard water under a hot mop tar membrane could get sticky

Bart

Unknown

this has been working for me...

I use to give this out on a pencil drawing, now I have taken the time to put it into Visio.

Hope this helps.

Steve