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Cathedral Ceiling Insulation: Foam insulation is an excellent solution where moisture is a problem. Solve moisture and rot problems in insulated cathedral ceilings with closed-cell foam insulation. It fills and seals the space and doesn't absorb moisture. - The foam solution to ceiling moisture problems
A cob house can be built is 6 months (during the warmer months of the year) if you have 5 to 10 volunteers to help you out. Once the house is complete, if it has been properly designed, you will not need additional heating or cooling devices. Thick clay walls are a great insulation and openings that allow for air flow will keep the air in your house circulating during the colder months. Adding a green roof can help keep the temperature even lower, if you live in warm climates.
completely off grid... uses Structural Insulated Panels (SIPs) in the walls and roof. The SIPs make the house so well insulated that in five years, the Mitchells have used only 1½ cords of wood for heat. The precut panels for the walls and roof cost $24,875 from Better Building Systems (30/477-8017)
Contemporary Part Earth Sheltered Split Level House, Truro, CornwallSuper insulated timber frame sustainable build utilising recycled insulation, breathable construction and natural materials. Passive solar heating, solar thermal and photovoltaic collectors to generate electricity. Underground bedrooms with thermal mass and green roofs. The house has been designed to minimise its impact upon the landscape and environment.