Basically what is happening is that moisture is building up behind the finish and causing the log to rot. Too much finish can form an impermeable layer on the surface of the log. Moisture (in the form of rain or snow) is always making its way into the logs – most likely through a crack or check on the surface. Once inside the log, it soaks into the wood. Then when the rain stops, the moisture tries to make its way out that crack again AND since the moisture has dissipated into the log’s core – it is also trying to make its way out via the entire surface of the log. Now, the moisture content is high in the log, which is a precursor to rot forming.To a large degree, a finish that can no longer breathe traps the moisture between it and the log. This situation eventually causes rot. Any time moisture is allowed to build up within a log, the conditions for rot are ideal. Click here to learn more about why logs rot.For more information on how to restore the beauty of your log home finish/stain, click here.This type of problem tends to be on more modern, hand-scribed homes that have a type of finish that builds up a film with each application. These conditions can cause the “perfect storm” for rot because this build up of finish has formed a veritable “plastic bag” on the outside of the logs, trapping moisture, and the logs can rot – even on homes that are less than 10 years old!In the case of newer homes like these, the logs have a relatively high moisture content to begin with (new logs are often green), which is compounded when the “film building” finish is applied. Problems can arise after even the second or third coat of this type of finish.Our experience has shown that many of these buildings start off with a finish that is breathable enough, but once the second or third coat is applied, the finish becomes too thick (builds up) and forms a barrier to the logs breathing.Do you have questions about your log home. Call Edmunds & Company and talk to experts in log home restoration. 715-373-5744 or contact us.