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Two-thirds
of the world's populations inhabit buildings made of earth. Straw bale
buildings have proven to be as durable as other types of buildings; they
have better fire ratings than standard construction, great insulation
ratings and are resistant to rodents and other pests (including wolves).
Also, straw is an annual renewable resource!
The straw
bale shed is a physical demonstration of an environmentally friendly building.
Each material used in this shed was chosen to minimize impact to the environment
during its harvesting and manufacturing, and to provide the highest levels
of energy efficiency over the lifespan of the building. Materials were
purchased locally and where possible, recycled products were bought or
obtained.
Highlights:
- This shed
is the first registered straw bale building in the city of Toronto.
The shed is constructed with a light weight framing system and straw
bale infill, enclosed with plaster on both interior and exterior.
- The straw
bales were locally harvested and provide insulation levels of R-40.
- The "truth
window" allow visitors to take a sneak peak into the wall system
and see the straw bales inside the shed walls.
- Recycled
material was used wherever possible. The windows are second hand, purchased
from the Habitat for humanity restore, the handles of the shed were
obtained from a dead tree obtained from the property and the framework
of the truth window is a recycled antique.
- The shed
was constructed through two weekend hands-on workshops where participants
learned techniques in straw bale and earth building. Many of these students
have gone on to build their own straw bale structures.
- An extensive
green roof has been installed to minimize the urban heat island effect,
provide a habitable landscape, reduce storm water runoff, and to protect
the roof membrane for longer life by blocking harmful UV and reducing
temperature fluctuation.
- The roof
consists of a vapour control layer, waterproof membrane, a drainage
layer, filter membrane, growing media (soil mix) and plants. The vegetation
on this roof has been planted as part of a research project by Ryerson
University.
The Annie
Shed is donated in memory of Anne Callahan, a lover of plants and gardens.
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