Green Building: Going…Going…Green!

b. Less lumber means more insulation
c. Thermal break - 1" polyisocyanurate.
d. R-20 walls
IV. Ceiling - R-40
a. Blown fiberglass
b. Cathedral batts - treat like non-ventilated wall
V. Window System
a. Double glazed
b. Low-e
c. Argon filled
d. R-2.5
VI. Airtight construction - think of as a balloon
a. Drywall as air barrier
b. Use foil back drywall or polyethelene as vapor diffusion barrier
c. Urethane foam, closed cell gaskets, and caulk
d. Continuous mechanical ventilation
e. All baths ducted to one hardwired fan.
f. Operates 27-7
g. Very careful details at tubs and stairs
h. Drywall to window - "J" channel with vinyl fins
VII. Simple, inexpensive heating system
VIII. House orientation
a. Face front north or south
b. Use few windows on east and west walls
Continued on next page
More by Perry Bigelow
- The Spirituality of Sustainability
- Building and Development Philosophy: Cultural and Environmental Sustainability
- Energy and Environmental Building Association, 1999
- Think Differently - Think Creatively
- Bibliography - Neighborhood Planning, Community & Ecology

