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Energy Efficiency in Log Homes and Log Cabins

Energy efficiency is an important consideration in the building of a home. Some people believe log homes are not energy efficient. This is because logs have a low "R-value". The R-value is a rating schema used for measuring a material's likelihood of heat transferring from one side to another. Traditionally, you want to material with the higher R-value. Logs don't have as high of a R-value as stick-built homes with insulated walls.

However, it turns out that logs are energy efficient anyway. According to The Log Home Plan Book, "The true efficiency potential of a log has more to do with its thermal mass, or its ability to absorb, story, and release heat over time" (104).

Basically this means that log homes should not be judged by the R-value of the log walls as far as energy efficiency goes. A well-built log house (what other kind would you want?) is every bit as energy efficient as a conventional home with insulated frame walls.

You may be thinking this means bigger logs are better. In essence, that is true. 4 in. thick logs are not as efficient as 8 in. logs, however they will still perform up to code in very cold climates.

Not only are log homes good for keeping heat in. They can also keep you cool during the hot summers. Build your roofs so that they overhang a couple of feet (a typical practice with log homes ), and they will provide cooling shade during the hot months while still letting in plenty of light.

Source: The Log Home Plan Book