Hi all, I have a room in an attica that is surrounded with insulation but
there is no vapor barrier covering it.
The room is cooler than the rest of the house. Would it make it warmer if
there was a vapor barrier surrounding it. I was thinkingof putting anonther
layer of insulation and then vapor barrie to improve the heat retention. I'm
assuming that this is why the room is cold.
Any opinions appreciated.
More insulation will help, a vapor barrier little, but will keep
moisture from penetrating getting insulation wet and reduce air
excaping. Do both insulation and barrier. But your heat system may be
The vapor barrier should not make any noticeable difference in the
temperature. That is what the insulation does. Vapor barriers are used to
control moisture. As moist air cools, it can no longer hold all the water
vapor and some will condense out. If that happens in your walls, it can wet
the insulation reducing efficiency and-or damage the structure. Putting a
vapor barrier in the wrong spot can make things worse.
The question of should you use a vapor barrier will depend on the
construction, ventilation, any heat-moisture or A/C sources and your local
beware of adding a vapor barrier; it can easily be placed in the "wrong"
location creating a whole lot of damage.
depending on your location you could trap a great deal of moisture & rot out
your structure in short order.
google "vapor barrier placement"
for more info
Fiberglass insulation is rendered useless by circulating air currents,
the vapor barier will greatly improve the comfort level for you. You
might want to look into spray in foam-it does not degrade in high
humidity and does not loose it's abilty to insuilate when the
temperature differential is great. Fiberglass insulation has both of
Ignore r value ratings, they do not take into account real life
situations and favor fiberglass insulation. If more people knew the
truth about fiberglass, there would be alot more spray in foam
Art in Maine
ky1k aatt pivot ddoott net
On Mon, 8 Nov 2004 09:57:57 -0500, "not Steve Buscemi"
Albert tell us about fiberglass.
People do know about foam. Remember Urea Formaldehide !!!. I have it,
it is now junk-powder. and many people spent thousands removing it.
Sure fiberglass performs worse when real cold, but is cheaper and no
fear of another UFFI disaster.
Your climate has a lot to do with location of vapor barrier.
I suggest you check the Building Science Corporation web site.
It has researched suggestions based on climate.
You don't say anything about HVAC supply and exhaust or connection to
other conditioned spaces.
Orientation of roof surface and of windows will affect heat gain.
What conditions do you experience in the summer?
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