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Posted by Brian O on February 4, 2007, 10:07 am
> Joseph Meehan wrote:
>
> > Brian O wrote:
> >
> >>I'm trying to understand what the difference is between the high
> >>dollar stuff that these insulating companies sell and plain aluminum
> >>foil, other than the reflectivity might be higher. Right now I'm
> >>thinking about just trying an experiment with a few boxes of aluminum
> >>foil by stapling it to the rafters with the reflective side toward
> >>the roof. Please let me know the fallacies of this if there are any.
> >>Thanks in advance.
> >>B
> >
> >
> > The professional stuff is bonded to a strong backing. Much easier
to
> > work with.
> >
> > Don't expect too much from the stuff. It can help but the advantage
> > decreases with age as dust forms on the surface.
> >
> That's why you mount it shiny side down.
>
But if you mount it shiny side down, that defeats the purpose of keeping the
radiant heat from your roof out of the house. In that case it would only
work in the winter, as in summer the heat would still penetrate from the
outside. Am I correct on that?
B
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