Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Radiant Floor Design

Options
SC HVAC
SC HVAC Member Posts: 2
in THE MAIN WALL
With raidant floor heat, is it ok to install a foil vapor barrier such as foiled kraft paper between the solid wood flooring an the subfloor (plywood)? Would this cause damage to the wood flooring or to the plywood subfloor? My customer wants us to do this and I have second thoughts. We plan to install cross-linked PEX under the plywood. This floor is over an unheated basement and the basement ceiling will be insualted.

Comments

  • [Deleted User]
    [Deleted User] Posts: 0
    Options
    Shouldn't hurt..

    may actually help.

    In order for aluminum to reflect long wave heat transmission, the foil has to be 98% pure, very smooth and have 1" dead air spaces on either side fo the foil. In your case, it would probably spread the heat transmission out a little to avoid heat striping. The R value of the foil is nill. Just curious, why is the custoemr requiring the foil?

    ME
  • SC HVAC
    SC HVAC Member Posts: 2
    Options


    They want to place foil between the plywood and the hardwood finish to stop "fumes" from entering from below and I also think they are concerned about outgassing of plywood, which I understand is nearly null.
    Thanks for your input...
This discussion has been closed.

Categories