Insulation and Drain Board

And the drainage efforts continue with the installation of drain board.  First there needed to be insulation board glued to the concrete walls.  This layer of insulation needs to be outside the walls, rather than inside because there cannot be anything on the inside of the concrete walls for the passive solar aspects to work.  The concrete walls will be part of the solar mass.

Owens Corning FOAMULAR® 250  - R10

DELTA®-DRAIN is a highly effective drainboard that controls the flow of below grade water. Its high water-flow capacity ensures effective drainage for virtually any construction project. The drainboard enhances the effectiveness of waterproofing because it relieves hydrostatic pressure build-up against subterranean surfaces.  http://www.cosella-dorken.com/bvf-ca-en/products/foundation_residential/dimplesheets/products/drain.php

Close up of drain board being installed over foam board.

View from the north looking at back wall of house.  Insulation foam board and drain board installed.