Add distinctive beauty to your chink-style log home with Perma-Chink, the original synthetic chinking. Its presence on tens of thousands of log structures around the world attests to its lasting appearance and durability. Superior bonding and flexibility allows Perma-Chink to stretch and maintain a tight seal by following the movement of your logs. Although it looks and feels like traditional mortar, its premium acrylic latex formula will not crack, chip, shrink or fall out. There's simply no better way to seal and protect your chink-style log home. Highly Elastic Seals 1"-6" Gaps Virtually Maintenance-Free 10-Year Warranty