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Air should be circulated between a conditined crawl space and the rest of the house in order to prevent air from stagnating. If the vapor barriers should be breached, the humidity levels in the...

While the air spaces do not have the R-values claimed by the manufacturer of that insulation, foil-faced insulation products do provide additional benefit in that they resist radiant heat transfer. ...

Beware of this insulation, also known by one well-known brand name, Reflectix. The FTC has forced them to stop making false claims about its R-value, which they were claiming was R-4 or greater. In...