Literature Review on Building Envelope, Heating and ... - Beeshive.org

Coastal Northern Regions
For high-moisture climates, key criteria for building envelope assemblies are an ability to
handle as well as withstand wetting spells with little effect on the assembly durability.
Design needs to emphasize deflection, drainage, drying, and durability moisture
management strategies. Wall systems to consider include:
• single 38 x 139 mm (2 x 6) stud wall with exterior rigid or semi-rigid breathable
insulating sheathing board and blown-in insulation in the stud spaces; and
• single 38 x 139 mm (2 x 6) stud wall with interior 38 x 64 mm (2 x 3) strapping on
the interior. Additional batt insulation is placed in the strapping space.
Concepts to Consider from the Advanced Wood Framing Technology
• Use 38 x 89 mm (2 x 4) lumber for cripples and jack studs.
• Use a 38 x 89 mm (2 x 4) lumber for bottom and top plates to reduce material
consumption.
• Use drywall clips at the corners to eliminate three-stud corners.
Concepts to Consider from Indigenous Adaptation Principles
• Respect the indigenous appreciation and careful management of local materials and
resources.
• Every design aspect and each element of the building contributes to the net
environment of the living space.
• The dome architectural form of the igloo sheds wind, which reduces the erosion of
envelope surfaces, the accumulation of snowdrifts, and heat flow from the building
envelope.
• In the Cape Cod and Hungarian houses, masonry walls or stucco over earthen or
adobe walls were used in response to damp conditions. For wood, protective paint
was applied. In northern coastal areas, use large windows to harvest daylight to
compensate for overcast skies. Windows in all directions provide daylight and
summer ventilation. Window shutters or storm windows protect against storms and
winter cold.
• Integrate heating and cooling comfort appliances with the building design.
Concepts to Consider from Super-Insulated Envelopes
Building Envelope
• Determine the wall insulation level, hence wall thickness, based on energy
optimization analysis using a target energy budget.
• Use two-layer insulation, because it allows insulation joints to be staggered and
reduces the thermal bridging potential of fasteners of the base layer.
PERD-079: Task 2 - <strong>Literature</strong> <strong>Review</strong> 95