| http://www.w3.org/ns/prov#value | - The first method revolves around foam sprayed in place (generally sprayed in between the rafters / trusses), while the second utilizes foam board (generally placed on top of the exterior roof sheathing.) Depending on your roof, ease of access, etc??? this will help dictate which method would be best for your home and is generally best left to a professional (not including cheaper in the case of sp
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