Hello Everyone,I am currently building my pole building,
and have a little conflict of opinions concerning the foil vapor barrier. The building came as a package. A vapor barrier was supplied as part of
the roofing materials. It is white on one side and has a foil face on the other.
The company says I should install it with
the foil side facing the metal. It should
be pulled tight across the purlins, then temporarily stapled in place. The steel will lay directly on it. Out of curiosity I searched the web for information about the installation and found a variety of ways which conflict with the company's approach. Some information
leads one to believe the foil should face down into the building. Some installations
have the stuff being draped over the purlins
so that it sags a bit to create an air space.
Most say the direction of the foil does not matter, but that by turning it down, towards the
inside of the building, it will not get dirty.
Since, once it gets dirty, it will no longer function as a radiant insulation. At this time, I intend to just leave this building
uninsulated. So, this barrier is intended to keep the metal from sweating and dripping. If there is anyone out there with any good
experience please let me know what you think. Best regards, Tim, Ohio
|
