Doors are installed similarly to windows. A 2×4 ripped is offset at jamb and head. The door frame rests on plywood spacers and is glued/sealed with adhesive foam. The frame is over a self-adhered flashing at sill which itself sits above rigid EPS at concrete foundation. The EPS is painted with compatible damp-proofing. 2 layers of rigid roxul provide a thermal bridge free installation at the wall. On the interior the door is taped to the concrete topping at floor and to the studs at jamb & head.
The door install shares the non-conventional details as the wall detail (see Part 4). The exterior insulated strategy shown here is considered the most robust (http://buildingscience.com/documents/insights/bsi-001-the-perfect-wall) is endorsed by the Home Protection Office (https://hpo.bc.ca/r22-effective-walls-wood-frame-in-BC) the same people who insure your home.
Doors are installed similarly to windows. A 2×4 ripped is offset at jamb and head. The door frame rests on plywood spacers and is glued/sealed with adhesive foam. The frame is over a self-adhered flashing at sill which itself sits above rigid EPS at concrete foundation.
As mentioned in part 1 of the series this wall detail takes a high vapour permeance or breathable approach in contrast with a more vapour closed system such as traditional 6 mil poly, spray foam insulation, or SIPS panel.
The South facing sunshades on the Langley Passive House are permanent, sized to reject the overheating summer sun while allowing passage of the winter sun through the windows to heat the home, and fit the architectural style of the home.
The Langley Passive house is a ‘split-insulated’ wall assembley pioneered by RDH Building Engineering for the BC climate. This strategy is described in the Building Enclosure Design Guide (HPO 2011) and Guide for Designing Energy Efficiency Building Enclosures (FPInnovations 2013) both by RDH.
