When it comes to chinking, nothing compares to Perma-Chink. Perma-Chink is made with acrylic, so it’s able to stretch and form around the spaces between the logs in your home, allowing for a tighter seal. This allows Perma-Chink to prevent heat loss and air infiltration And, even though Perma-Chink is made with acrylic, it still looks like traditional mortar, so your home won’t lose that authentic, rustic look. Perma-Chink allows for easy application, but, if you run into any trouble, their support staff is just a phone call away.