GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Plus Icon Minus Icon Picture icon Hamburger Icon Close Icon Sorted

Community and Q&A

What radiant heat system would work best on concrete floor with tile?

nuclear free | Posted in Energy Efficiency and Durability on

I’m thinking something that would create a thermal break between concrete and tile floor. Anyone with ideas about what to use would be appreciated.. Thanks Rob

GBA Prime

Join the leading community of building science experts

Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field.


  1. user-2310254 | | #1


    Where are you located? Is this new construction, and is the radiant going everywhere or only in an isolated area?

  2. Expert Member
    Dana Dorsett | | #2

    Is there going to be insulation under the slab, or is this a retrofit over a existing uninsulated slab?

  3. GBA Editor
    Martin Holladay | | #3

    The usual method would be to install a generous layer of continuous horizontal rigid foam under the slab, followed by polyethylene and a concrete slab with embedded PEX tubing. The tile is installed as usual. There is no need for a "thermal break" between the tile flooring and the concrete slab.

Log in or create an account to post an answer.


Recent Questions and Replies

  • |
  • |
  • |
  • |