Log Home Checks

There is a lot that is involved with building, maintaining and inspecting of log homes. We inspect quite a few log homes in Richmond. One common problem we find is checks in the logs.  Here are some photos of checks.

Explanation: Checks occur as the moisture dries out of the log. As the moisture dries, the circumfrence of the log shrinks. The circumfrence of the rings shrink faster than the diameter causing the checks.  The checks occur randomly.  Some log builders will kerf a log or saw a small slot down the length of the log. This acts as a weak point so the builders can predict the location of the check. Its similar to a control joint in concrte.

The Problem: The problem with checks is that if they are on top of the log, they can trap water, or snow.  The water sits in the check and cause rot, mold, mildew or other damage. If the water freezes, the expansive forces can cause further damage to the log.  The checks can also be a pathway into the home for insects or air.  Infiltration from either can be a problem. Below you see some damaged ends of logs. These logs most likely had checks that caused the damaged.

The Solution: Large checks on top of logs need to be filled, caulked, covered or otherwise protected.  This will prolong the life of the log ends and can save energy.  It is also worth mentioning that the ends of the logs absorb substantialy more moisture than the face of the logs.  The ends need to be sealed as well to prevent fungus, rot and deterioration.

For the other home inspectors reading this. Yes, I know there are other obvious defects here but that isn't what this blog is about :)