HomeInsulation Mar 16, 2018 6:22:33 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by troycethers on Mar 16, 2018 6:22:33 GMT -5 Insulation’s primary job is to slow heat flow from room to room in your house. You want to slow this movement of heat and capture it in one place to keep the temperature the same throughout.