Some of our logs are cracking. What would you recommend we fill them in with? Thanks.
Do not fill the cracks, called checks in the logs. What will happen is the logs are always expanding and contracting and will pull away from the caulk making a hairline opening between the wood and caulk. The water can seep down in behind the caulk, but now that you have filled the majority of the opening, it cannot dry out and will cause log rot. It is better to leave them open and apply a little Shell Guard borate concentrate into the larger ones. One exception is if the check is running into a corner, door or window and allowing wind, water or bugs to get in then you must fill them. Just be sure to inspect them for failure 2-3 times per year.