Will basement sauna make the main floor flooring noticeably warm?

Question

I plan to insulate my 2x8 joists with R 22 and use a foil lined vapour barrier. To anyone who has constructed one, would this be adequate for the sauna ceiling or should I fill the entire cavity?

Oh yeah, flooring on main floor is laminate.

The Sauna will have an electric heater, and is not a steam bath. It is a dry heat and will not cause problems with excessive moisture.
Just wondering what others have done and if they experience warm floors above the sauna or not.

Answer 1

fill it all. blow in foam insulation, plastic vapor barrier, rot resistant woods, and most over looked drainage and ventilation.
http://www.hammerzone.com/

Answer 2

Basement Sauna

Answer 3

Without question your project will increase temperatures in the immediate area surrounding the appliance, but increase moisture and humidity as well.

I suspect warmth on the level above will be less an issue than the moisture which will be ever present below.

I suggest options in addition to the "barrier" you plan. Think of the ceiling as you would a bathroom, or shower stall. The backer board most effectively used would be water resistent, and easily installed as an alternate ceiling for the basement. I might even "paint" it with some quality, exterior/interior, epoxy paint.

I also suggest venting of some sort, especially when the appliance is in use, and maybe even a dehumidifier to maintain an environment that's as moisture free as possible.

Rev. Steven

With no offense meant I disagree with plastic sheet. Moisture will condense "Above" the sheet as well as the underside, trapping it.

Answer 4

Heat rises fill the whole thing

Answer 5

fill entire cavity and add plastic sheet over it all

Answer 6

it will make the flooring expand n contract until it busts and rots