Originally Posted by
sr1355
Mositure vapor can be expereinced in any temp range given right conditions, i.e. temp, humidity, fog, mist, etc... In cold, winter conditions, the moisture vapor can condense in the down at what is call the dew point. At a point inside a quilt where the temp is a the dew point the moisture vapor can condense into liquid form on the insulation regardless of insulation type. This temp will vary with outside temps, humidity levels, etc... In my former career we using vapor barrier to prevent mositure migration into building assemblies so a vapor barrier between the quilt and you would be an effective solution for winter conditions to protect your insulation of choice.
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