Improving our extremely drafty walls

Hi, we recently purchased 4 floor townhouse style condo in New Hampshire (6A). It is poorly built and extremely leaky.Our walls assembly consists of (from outside to inside):* Rough exterior… Hi, we recently purchased 4 floor townhouse style condo in New Hampshire (6A). It is poorly built and extremely leaky.Our walls assembly consists of (from outside to inside):* Rough exterior…Read MoreGreenBuildingAdvisor