Vapor Barrier vs Vapor Retarder

In this episode we are going to find out, if walls actually breath. We will check out different materials with different vapor resistance ratings and find out if you should use a vapor barrier ore a vapor retarder.
#breathing, #vaporbarrier, #walls

[@kugzilla]

Thank you so much . This was great and helpful towards a potential retrofit project . Im exhausted from reading papers so this being both educative was very welcome

[@Hatchmade]

Great demo. Thanks for sharing.

[@Nuno_Francisco_]

Great information! Thanks for the ubakus!

[@Zebedee2612]

Excellent! Keep up the good work.

[@AmisCorolla]

Thank you! great test.

[@adrianhall4547]

Excellent, very useful.

[@josephchlewicki8005]

Just Plain - Thankyou .

[@user-by9cc8qe1h]

Could you do the same test with hempcrete?

[@sanjivoberoi5361]

Excellent demonstration would be so useful for all levels of education & training instruction.

[@thundergauge]

Was the drywall painted or non painted when you conducted the breathing test?

[@timbertimo9428]

It was not painted

[@martinkarlsson7263]

more vids bro!!!!

[@andreycham4797]

I have been looking for such calculator in English for ages . I knew there is one in Russian

[@alexandermarx8823]

Super geil👍 kann man nicht besser vorführen.

[@timbertimo9428]

You are welcome. 😉 Really glad you like my content!

[@ProTradeCraft]

Good for you for building a tight house. And good for you for seeking the information to do a good job. It seems like you are confusing "vapor barrier" and "air barrier" and strangely defining "vapor retarder" while doing little to clarify what "breathing" means for a building. Buildings are not alive; they do not need to breathe. Poorly chosen metaphors like this cause so much confusion. A lot of vapor travels on air currents, so controlling moisture in the vapor form is usually best done by controlling air movement. Vapor diffusion has nothing to do with air movement. Buildings should be tight because tight buildings do not waste energy. Once a tight building has been constructed, a mechanical ventilation system must be employed to ensure fresh air and to control interior humidity. (Of course, ideally, the mechanical system is designed well before the building is constructed...) Your tests were air-leakage tests of various materials compared to each other, but the vast majority of air leakage is not through OSB, drywall, or even MDF. It is around them, at the joints and connections, which is why you were taping the seams and edges of your OSB.