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What is the insulation R-value of the Chinking and Backer Rod?

April 26, 2017backer chinking insulation R-Value Rod

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What is the insulation R-value of the Chinking and Backer Rod?

1 Answer

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10 Posted

Sashco’s thermodynamic analysis of this question has revealed the following: a) A 9″ pine log has an overall R-value of about 11.2. b) The overall R-value of Log Jam + Backer Rod + the dead air space between the lengths of Backer Rod is about 10.6. c) The overall R-value of a log wall combining chinked joints and the logs themselves is about 11.1. So, when Log Jam is properly installed with backer rod it has virtually no detrimental effect on the overall R-value of the wall.