The First Now House

The Retrofit Process: Foundation walls


Insulate and waterproof exterior foundation walls

Insulating the outside basement walls allowed for damp proofing and foundation drainage at the same time. Insulation keeps the basement walls at room temperature protecting the structure, reducing risk of interior condensation and increasing the comfort level of the basement. Thanks to our sponsor, Owens Corning who provided the Celfort 200 PINK rigid insulation boards.

The Retrofit Process

To achieve our goal of a near zero energy retrofit we made the following changes to this home. As all existing houses have a unique set of conditions and characteristics, the application of the Now House process to another house would produce different design specifications. What follows is not a prescription for the near zero retrofit of all homes.