John from Hawaii sent us some good straw bale questions:
I’m new to this topic and find the idea of using straw bales to build homes so logical that it makes me wonder why it isn’t more popular! I have a few questions for you:
1. Are there any problems with straw bale construction in high humidity climates like Hawaii?
2. Can straw bale homes be made to withstand hurricanes?
3. Do termites pose any kind of threat to straw bale construction?
Mahalo,
John











work
I´m new to this topic in the use of straw bales, but, I work and am professional in adobe/clay/mud work and construction. If You use Adobe as plaster you benefit from some very important advantages. Adobe storages only about 4,5 % of 100 of water. Cement or gypsum in house construction storages at least 11 - 12% of 100 of water. That means, that the materials always tries to find their balanced level of water. By that, they take the water from their ambiance and also give the water to the plaster material and/or wood-construction.
If you use straw or wood and cement/Gypsum plaster, the plaster gives the water content to the wood or straw, at least 11% of 100.
Termites, and that is the point, can use the wood only with a special water content from at least 11 - 12 %.
So, Adobe as plaster, takes the water from the wooden construction and brings the water content in the wood down. And i think, that termites can no longer have a party in a wooden house-construction. Condition is, that the adobe plaster is in direct contact to the wood/straw bales.
I´m interested to work on the islands with straw-bale/adobe/wood-construction, at first for cost and lodging.
Would be happy to hear from someone from Hawaii in that connection. Greetings, Martin from Germany
Straw bale/adobe homes in Hawaii
Martin,
There may be an opportunity for you to come to the island of Molokai and work on an eco freindly adobe/staw bale units. based on your talent and passion. I am working with a ranch that mows tons of grass/hay/straw and they catch fire sometimes from the heat. There is a rich red soil here on the island, that could be used for the adobe. The ranch has bio-dynamic and organic farming and you can learn more by googleing Poo U Hoko Ranch. I am from Cincinnati, Ohio and have been here a month slowly increasing my hours of work on the ranch. They know I have come here to do sustainable eco work. let me know if you interested.
Also feel free to call me at 808.646.9079.
Mahalo
Susan
Termites are no problem
They said in the show that termites don't eat straw, if you make the framing of metal as well as using staw bale then your termite risk should be limited (any wooden trimming or wooden furniture) Which means not needing to tent house or any other bulk termite solutions (they mentioned better solution to house tenting http://www.buildinggreentv.com/workshop/doors-windows/73) just remove what evers wooden. They also said strawbale was exceedingly cheep.
Humidity for straw bale construction
John,
I love this idea as well, but humidity is definitely a concern with straw bale construction. Straw is an organic material and it is susceptible to mold easily. In Minnesota, where we have a high level of humidity, it is almost impossible to find a time of year where straw bale construction makes sense and the straw is completely dry. There have been a few attempted projects here, but almost all of them have ended up with mold. If there is a way to combat this, I would be interested in knowing it myself!
That said, it works great in drier places like central Mexico!
Does straw grow natively in Hawaii? I find that a good rule of thumb for using organic materials is to determine if they grow natively or not. If they thrive on their own, chances are they will be a lasting material in that environment as well.
I hope this helps!
bugs in straw
I saw nothing in your tv presentations about bugs in the straw. Why not? Even if the bugs dont eat the straw, they may eat the fungus or other bugs who find the straw hospitable. What goes?
Bugs