Unless you re in a one way climate like minneapolis or miami putting plastic in your walls will trap moisture and grow things.
Does your floor need to be able to breathe.
2 walls have to breathe.
Houses don t need to breathe but they do need to be able to dry out when they get wet.
The need for materials that don t trap moisture is true for many houses.
I just wanted to add one more vinyl floor variant that you should consider for a basement installation if you are already considering a click lock floor.
If the subfloor is new it may need longer especially.
A flooring professional should be able to help do the research.
Breathe easier about your flooring.
Allow the subfloor to dry for at least 72 hours after you remove an old floor covering and before you bring the new flooring into the room.
This low level of air leakage allows the home they say to be properly heated and cooled and to provide.
Most folks who say walls need to breath mean moisture needs to be able to dissipate sufficiently to avoid mold and rotting issues in the wall cavity.
You say so your self in your foil faced polyisocyanurate example.
Most walls do need to breath from one side to allow any moisture from dew point condensate to dissipate.
Choose products with little or no formaldehyde.
When it comes to insulating homes sealing them and providing proper ventilation a number of myths and old wives tales persist.
I highly recommend loose lay vinyl tile.