Davy Crockett's cabin was cozyexcept that it wasn't. He spent a good amount of time plastering mortar into those joints every year. Old mortar cracks and crumbles out of the joints, allowing in wind, bugs, dust, rain and pollen. That's why Sashco created Log Jam, the industry standard for synthetic chinking. Its texture recreates that old-time mortar look while sealing your rustic cabin from vermin and wind alike. It stretches and won't let go when your logs move. With Log Jam, you can keep the cozy feel and rustic look without compromise.