Building a sauna without foiling the walls and ceiling is like building a shower and tiling right on sheet rock. It may work for awhile, but at some point it may very well get yucky. When you are offered such a wonderful product (foil), it’d be a shame not to use it.
UPDATE: Thanks to the continued sword work with the Christopher, the Thermal Whisperer, please note the addition to below, which is date stamped in 2013 when people may still have been using land lines:
- is easy to apply: just use a staple gun and staple it to your studs.
- is easy to work with: foil tape your seams and around light switches, etc.
- performs fantastically: heat gets radiated back into your sauna and foil creates a superior vapor barrier, protecting your structure and isolating moisture and löyly.
Foil bubble wrap is finding applications well beyond sauna. It is an emerging building material that you’ll be seeing more of, in more practical applications and uses. Foil bubble wrap automobile?
Home building centers sell foil bubble wrap in the insulation department. Here’s Ace Hardware’s offer.