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Our Underground Home

Over the course of about 10 years Mickey (my wife) and I built our underground home. The roof has two feet of dirt on top and we grow most of our cold hardy tropicals there as it gets lots of sun. The exposed parts are covered with moss rock of which we have an abundance. Mickey laid all the stone herself. All together we did about 95% of the work ourselves - that's why it took so long! We've lived in our home for about 25 years. While it is very energy efficient the best part is that we don't have to worry about tornadoes which are fairly common in our part of the country.


An Energy Efficient Home
Mickey and I began our home in 1975, right after the OPEC oil embargo in 1974. This was a unique time. People began to thing about energy and the enviroment. For the first time solar energy, wind power, and other forms of alternate energy were in the news. Several underground buildings were built at this time. I read about an architect, Malcolm Wells, who had designed underground homes that were very energy efficient. We ordered a set of plans just to see how it was done. We studied these plans and others, read all the books we could fine, talked to architects and structural engineers and ended up designing our home ourselves. We took about 10 years to get the home to the point where we could move in. We then spent the next several years upgrading and landscaping.
Our home has a number of "green" features. Being underground the temperature stays near 58 with out any heat. This means we only have to raise the temperature a few degrees on the coldest days. We used a small wood stove to heat the 2500 sq. foot home for many years. We later changed to gas logs (in the heater). There is a 20 foot, glass wall looking into the atrium that faces south. This room is floored with dark tile that soaks up solar heat most winter days. There is a small roof that extends out over the glass was that blocks sun during the summer. The window are all double paned. There is an extremely energy efficient heat exchange ventilation system. Most lighting is with energy saving florescent bulbs.
Our country soon forgot the lessons of 1974, went back to our old habits, and we were soon more dependent of OPEC than ever. Seeing people take an interest alternate energy and conservation again is a positive sign. We've been extremely happy with our underground home bor the past 24 years and would do it all again.

Front of the house
This is the front of the house. That's a small ground cover bamboo(P.humilis) along the front edge of the roof. We planted this as a buffer to make it difficult to walk off the edge! We had blackberries planted when the kids were little but they soon took over the roof and we spent a lot of time and effort removing them.

 

Rear of the house with bamboo
This is the rear of the house. There are steps down into a sunken courtyard. That's Corky on the top step. Palmata bamboo is on the right. We've since removed the Palmata and planted ferns in the area as it is in full shade and that's about the only thing that grows well there.


rooftop gardens
This is the roof. The picture was taken from a nearby tree. On the left is our sunken courtyard, the atrium. You can see Palmata bamboo in the lower part of the picture. We grow many varieties of Gingers, Elephant ears, Cannas, Brugmansia, and Banana trees along with a few annuals and most anything else that we find in local nurseries during the spring.
 

 

our sunken courtyard with bamboo leaves
This is ther sunken courtyard or atrium. This allows lots of light into the underground home. Bedrooms have windows onto the courtyard while the "Sunroom" has a glass wall 20' long on it's southern side providing passive solar heat in the winter.

Banana trees on the roof
Another view of the roof from the other side. The banana trees got to about 15 feet this year. We installed an irragation system on the roof a few years ago and it is a real time saver as these plants all need lots of wate to do their best.

rooftop patio with elephant ears
This is the center of the roof where we have a small patio surrounded with tropical plants. By the end of summer the patio becomes very private spot as the surrounding plants tower over it.


This is the south facing wall that makes up one wall of our sunken courtyard. It gets lots of sun in the winter but, as you can see from
the shadows, it is pretty well shaded by trees in the summer.The floor behind the windows is brown tile and really gets warm on sunny days. It does provide
significant heat on many winter days. It also floods the house with light. Visitors always find it hard to believe they're in an underground home once they come
inside.


To see close-ups of many of our cold hardy tropical plants take a look here.

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jmbamboo
4176 Humber Rd.
Dora, Al 35062
205 283 5638

Underground Home

Created and Maintained by: 
Jim Mortensen 
mailto:jim@jmbamboo.com

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