Crawlspace retrofit is literally the low hanging fruit of energy efficiency. Three major energy savings strategies are seal ductwork, air seal holes in the building envelope and create a warm crawl space by insulating the foundation and adding a vapor barrier on the ground. This keeps floors warm, prevents pipes from freezing, and brings the hvac system inside of the thermal envelope.
Read more: Weatherization Underground: Crawlspace Retrofit – GreenBuildingPost.com
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