Tips when applying your sauna vapor barrier to your sauna
A sauna vapor barrier is very important and a step that should never be skipped
- A sauna vapor barrier is very important and a step that should never be skipped and do NOT use a substitute — it could melt at sauna temperatures. The foil will never melt and is odorless.
- See our installation step: How to Build a Sauna: Foil to Reflect the Heat for installation tips. See our list of sauna foil sizes.
- It's worth noting that the sauna foil vapor barrier adds a R-1 value to your insulation factor, and acts as a vapor barrier, protecting your wood
The techniques we follow are:
- Start with the ceiling then the walls.
- Staple the foil vapor barrier to all interior surfaces; the wall and ceiling, not the floor. Overlap your wall foil over the 3" of the ceiling, helping to keep rising heat near the ceiling.
A vapor barrier protects your walls from absorbing vapor. Some steam in your sauna is great to help bring on a sweat, but it creates humidity that should not seep into the walls. Venting a sauna into your house is fine.
Select the sauna foil size that fits your sauna.
To best answer, you may want to see: How are home sauna kits built? | Explain Precut vs Prefab.