Is there a significant advantage to providing more insulation in north facing walls in heating dominated climate zones?
For example n Santa Fe, NM (CZ 5B), where there is a significant heating load during the heating season but very minimal need for space cooling in the cooling season, would the heat loss through north facing walls be reduced enough to warrant adding more insulation to those north facing walls. I believe that may be the case. I believe because south walls may absorb more solar-generated heat and conduct that heat into the home (or reduce the outward flow of heat from the home) that it may be better to have 'well insulated' south facing wall systems and more highly insulated north facing walls where there is no benefit of heat gain during the heating season due to solar exposure. Is this thinking correct?
Posted Aug 9, 2014 10:24 AM ET
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