straw bale construction

Ceilings, frame walls, and stem walls are always an option for plumbing and electrical locations. When you do have to run these systems through a bale wall, how do you do it?

Plumbing leaks are more critical within straw bale walls than within stick frame walls for obvious reasons: straw rots pretty quickly if it gets wet and stays wet - a lot quicker than 2×4s would rot. As a precaution, it is best to keep most of the plumbing within interior walls and run the water into the house through a stem wall. The highest standards of fitting can help minimize the risk of leaks. Careful planning eliminates unsightly messes at this point. Before beginning construction, you should plan for water to enter where pipes will not be seen in plain view, such as under a sink or in a mechanical closet. Use of the stem wall is appropriate for running water into your structure.

The electrical system in a bale home is the same as in a stick frame home from the circuit breaker to the switches and fixtures. However, electrical wiring has different installation methods in a straw bale wall. UF (Underground Feeder) cable is recommended for its durability and moisture resistance. A metal “needle” is used to thread the wire from the exterior to the interior where necessary. A chainsaw is used to cut a 1.5 inch channel in the straw bale walls. The wire is stuffed into the channel or in the seam between bales and run to switch and fixture locations. Plug and switch boxes are screwed to a wooden stake which is driven into the bale to keep the box in place.

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I'm in the early planning stages of building my dream green home. I've been working on a solid plan for a little over a year now and have considered a tire home, underground home, and a straw bale home. After looking at 'final' projects straw bale won out in a land slide. The looks of the home are beautiful and still retains all the green features I am looking for. My question is about the roof. I understand the simple stuff like the color of the room matters, it only makes sense that a back roof will be hot while a light colored room will be cool.

But what do you make the roof out of? What is the material you use? I want to know everything from what is the supporting structure made out of to what goes on top of that and finally what is the final covering made out of? It seems everywhere I look it talks about the wall of the home being straw with a earth plaster but very few references to what to make the roof out of or choices when it comes to making a roof? Can you guys put together a simple guilde to the best ways to make a green room including what they are made of and the insulation you use on them.

Thanks,
Gregg Webster
Iowa City, IA

Using hay is great for thermal protection,but squirrels and mice love it. How do you protect against a home invasion? Once they are in, they have a ready made mansion.

If you find yourself in the Texas area end of September or are lucky enough to already live here :-), make sure you come to the 8th Annual Renewable Energy Roundup at http://theroundup.org/ in Fredericksburg, TX September 28th-30th in the center of Texas Hill Country.

It's $10/Friday, $12/Saturday or $20 for all three days! That's a bargain for the amount of information you can get on these hot topics:

* Solar
* Wind
* Geothermal
* Water Use & Reuse
* Energy Conservation
* Rainwater Harvesting
* Green & Sustainable Building
* Organic Growing
* Alternative Transportation
* Straw Bale Construction

And there will be:

* Exhibits
* Free Guest Speakers
* Natural Food
* Family Activities

Come and learn something new or meet contacts in the green field. Besides, it will be a fun trip and nice drive over there, as you'll pass some beautiful areas, and the historic town of Fredericksburg with its German influence and charming old west appeal.

Our architect and I might exhibit there and advertise our blog and my upcoming e-book. Let us know if you live in the Austin area and want to carpool! Thanks to Maverick for passing this information along! READ MORE AT SjodinDreamHome.Blogspot.com ...