Living off Grid – Home Design Features Part 1

Reader Contribution by Ed Essex
Published on October 31, 2012
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Our off grid home has many design features you don’t normally find in most houses. Many people come here to see what some of these features look like or how they operate. Since I seem to struggle with my memory more and more I thought it would be nice to list them out along with a little explanation of them. Most of them are explained in detail on prior Blogs.

  • Roof overhangs – our eave length is calculated to keep the sun out of the windows in the summer which helps with natural cooling, and let the sun in during the colder winter months which helps with passive heating. Anyone can do the calculation. It is most important for the south side of the house.

ICF’S – the exterior walls are made out of Styrofoam concrete forms filled with concrete. The concrete is 8″ thick. I personally recommend that if you go this route you need to use the icf’s that have more insulation on the outside form than on the inside, especially in colder climates.

Earthquake proof – because we chose to have a concrete slab and concrete walls it was relatively inexpensive to add enough rebar to make it possible to withstand
a pretty good size earthquake. We’ve already had a 5+ on the Richter scale.

Fireproof – our exterior walls are layered with Hardiplank siding, then 2″ of 3 hour fire treated icf, then 8″ concrete and then 2″ more 3 hour treated icf. Our roof is metal. Our soffits are also metal with tiny slots for venting. We also put metal ceilings on the exposed wood framing in the carport and front porch roofs. This makes our house virtually immune to forest fires. We got tested the very first year we moved in. We had zero repercussions.


Solar tubes – these allow natural light where you wouldn’t normally have any. They greatly reduce the need for electrical lighting.

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