Insulation blankets are typically installed from top to bottom in pole barns and pole building walls. (Installing from bottom to top can create unattractive wrinkles) Generally, posts are placed 8' on center with 7 1/2' between posts. Blankets are cut to fit snug between the post. Tabs are then nailed to the posts and trimmings can be stuffed into the gap between the post and exterior wall panel. A plastic washer can be used with the nail to give the walls a finished look.