Most Cost Effective High R Value Wall Retrofit Insulation for an old brick home with no current wall insulation in Texas

Hello-We own a 1958 brick home in Dallas, TX. We have added spray foam insulation to the attic. We’ve learned our walls do not have any insulation & our rooms… Hello-We own a 1958 brick home in Dallas, TX. We have added spray foam insulation to the attic. We’ve learned our walls do not have any insulation & our rooms…Read MoreGreenBuildingAdvisor