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Sauna Foil Vapor Barrier
Sauna foil roll Sauna foil exposed with sensor Foil stapled to sauna walls

Sauna Foil Vapor Barrier

Sauna foil vapor barrier increases the sauna's efficiency by reflecting the radiant heat back into the room

Staple the sauna foil vapor barrier to the studs over the wall insulation (aluminium side showing) — adds 1R insulation factor by reflecting radiant heat into the sauna

Comes in a 54" wide roll. However all sq ft figures below are based on a 48" roll, so your overlap is taken care of! Aluminum foil sauna vapor barrier is one of the necessary components for traditional sauna room construction. We use foil in all the saunas we manufacture. Do NOT use other vapor barrier materials, such as plastic, Visqueen or Tivek. They melt and/or release an unpleasant odor. Choose how many square feet you need below.

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Price: $1.00

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Cedarbrook Sauna + Steam

Retain More Heat Using an Aluminium Sauna Foil Vapor Barrier

How-To Video
Install Sauna Foil

Much better than Visqueen/Plastic sheeting which will deteriorate in the heat and exude a plastic smell.

  • Waterproof Aluminum Vapor Foil
  • Non-permeable
  • Reflects Radiant Heat
  • Flame Resistant
  • Strong Tri-Directional Tear Resistance
  • UL Listed (R3035)
  • Energy Efficient
  • Mold resistant and non-corrosive Click here to read complete data sheet

To choose quantity, measure the square footage of the walls of your sauna (not including the door) and order that amount. For example if your sauna is 4'x6'x7' with a standard 24" wide door, you would need 150 square feet of foil. Note that 14 sg ft is deducted from the room size for all the room size options, to account for the door sq ft. Overlap all seams by 1-2".

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Average customer rating:
(1 reviews)  

1 Most useful customer reviews (see all reviews):
Jay K., Winnetka, IL
Thanks for the extra foil. Thought they were 4' rolls, but there's 6" extra. Made the overlapping super easy.
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Cedarbrook Sauna + Steam

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