Davy Crockett€™s cabin was cozy€¦except 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.