Sunday, April 14, 2013

Clay House Style




Clay house & more style (right menu)
Eco-friendly clay houses are produces using wet clay bricks which are shaped and dried in order to harden. The drying process is crucial because it is responsible for the strength of the home. Particles in the clay fuse and develop extremely tight ceramic bonds which are almost inseparable.





Now, I am not a rocket scientist or a rock scientist :) but the concept is easy to understand. Clay houses are nearly invincible to most weather conditions and un-phased by chemical attacks. These benefits alone make clay homes a sound investment. However, I have only touched the surface. Let's move on to the good stuff.










Cost
Clay houses like all homes have some upfront expense when building. But costs are lower than traditional homes by as much as 50-percent. In addition, maintenance for a clay house is very cheap. Think about it. Clay won't warp, dent, rust, peel, get eaten alive by termites, or experience any of the other problems that most homes go through. Because of this, the only thing you really have to pay for is accessories (paint, plumbing, electrical, etc).






Insulation
Clay houses do a great job of providing thermal and acoustic insulation? What do I mean? Basically, if you live in a clay house, you can expect to stay warm (or cool depending on the weather) and not have to worry about major sound waves entering or leaving the room. This is because clay has the ability to slowly absorb heat and sound and release them in the opposite direction.



Flexibility
Since clay is such an active solution (can be molded easily), it really gives you the option of warping the home exactly to your liking. You see, cement blocks or bricks usually come in standard sizes which you must incorporate into your building strategy if you want everything to fit properly. With clay, you are the ultimate creator and can morph and play with the shapes until they are exactly to your liking. This is why Detroit automakers usually develop concept cars with a clay outer coating first so they can mold them into the desired design.



 
Fireproof
You would be lucky to burn down a clay home after you've poured gasoline all over it and lit it on fire. This is because the material that clay homes are produced from is very fire resistant. This concept has been around for a long time. Back in the mid 1800's, people became enlightened and began switching their wooden homes for ones made of clay, mud or stone. Looks like things have come full circle especially for environmentalists interested in green homes and green home building.
Also, fireproof natural can save money of insurance premiums. For example, homes which are in areas that are more prone to fires have to pay more in insurance. Your insurance company may give you a lower rate for insuring a house made of clay against fire damage.


Conclusion
With people more environmentally aware today and also enlightened as to how green homes can save big money in building materials and energy savings it is no wonder that clay houses are making a comeback.

 

Straw/clay has been in use for thousands of years with great success. The focus of our blog is obviously earthbag building, but we’ve decided to include coverage of other natural building methods to broaden our horizons and reach a wider audience. It’s good to know a whole range of building ideas so you can obtain the best possible house. For instance, maybe you want to use earthbags on exterior walls and straw/clay on interior walls. This is a very good option that requires no formwork. You could stuff straw/clay inside pallet walls for soundproofing between rooms. Most often straw/clay is combined with a timberframe that carries the loads.
“One of the best low-cost insulating materials is clay-coated straw (or other lightweight plant materials). A light coating of clay acts as both a binder and preservative. Clay-coated straw has been shown to last over 700 years as a non-deteriorating insulation! As the clay dries, it binds the straw together in a surprisingly rigid mass. It’s a “natural styrofoam”.



Materials

Any stiff agricultural waste similar to straw will work. Hay is too flimsy and has seeds, so it doesn’t work very well. Barley straw, wheat straw, and other grain straws work well. Clay can be gotten from the earth. Many subsoils are primarily clay. River bottoms and river banks are usually clay. Clay is also used by brick and tile manufacturers and can be bought from them cheaply. (in our area, about $16 per ton)
Even soil which has a moderate amount of clay such as commonly used for adobe, about 35-50% clay, will work. The slurry is not as sticky, compared with pure clay, but even ordinary mud works well enough. This is not rocket science. Use a dry wall stirring paddle and electric drill to mix the clay or mix in any kind of mixer. Mud mixed in a box with a hoe works.


Method
1. Break the clay into small particles so that it will mix with water easily.
2. Make up a slurry of clay and water. Any soil that is mostly clay will also work. The consistency should be like cream or a thin milk shake.
3. Spread the straw out on the ground. Dampen the straw with a spray nozzle if available.
4. Pour (drizzle) the slurry over the straw, then toss and mix the straw so that it becomes lightly coated. Ordinary garden rakes work well. The clay should only very lightly coat the straw. This is NOT adobe. Maybe 5-10% clay, 90-95% straw. When dried in the wall, you can hardly see the clay, but it binds the straw together very well.




Uses
In addition to being an insulator, it can be used as a wall forming material. In the middle ages, even up to the present time, the method works like this:
1. A post and beam structure is first built.
2. Two boards are temporarily nailed to the posts, one on each side.
3. The resulting cavity is filled with straw-clay.
4. The material is tamped down (a 2×4, 4×4, or small post will do). The idea is not to compact it into a solid mass, you couldn’t do it easily anyway because the straw will remain springy until it dries.
5. The two side boards are moved up immediately and stuffed again and again until the wall is as high as desired. No need to wait for the straw-clay to dry before moving the boards up. (A moveable, sliding form could also be used to make walls.)
6. A saw is used to cut out windows, or window frames are placed first.
7. The wall is allowed to dry and is hand plastered inside and out. The soft undulating plastering adds a charm that cannot be found in modern buildings.”



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