Dear Annette: Please, please explore radiant barrier foil insulation and house wrap before you make your final decision. These are the most remarkable energy conserving products on the market today. They reflect 97% of the radiated heat from the sun. I've personally seen an entire home insulated with this and I'm very impressed with the drop in electric bills. Please visit www.btubusters.com & www.bestinsuation.com then call Mr. Johnny Barrios at 800 717 8773 (He's in Austin but covers a lot of the south) When you call him, please tell him that Brian Wood in Lake Charles referred you. Best of luck with your new home, you will really like his products. Regards to all, Brian (Tankless).