Titebond III Ultimate is our most versatile wood glue and is rated #1 by professionals. It offers superior strength, a longer open time and a lower application temperature. It passes the more stringent ANSI/HPVA Type I specification, classifying it as “waterproof”. While Titebond III Ultimate can be used indoors, it is the perfect choice for exterior woodworking, such as birdhouses, mailboxes, outdoor furniture and planters. It is also FDA approved for indirect food contact, making it a great choice for projects in the kitchen.