When it comes to choosing the best wood glue for exterior doors, it’s essential to select a glue that is not only strong and durable but also capable of withstanding the various environmental conditions to which exterior doors are exposed. The best type of wood glue for this purpose is a high-quality, waterproof wood glue. Here are some recommendations:

  1. Titebond III Ultimate Wood Glue: Titebond III is an excellent choice for exterior doors. It’s waterproof, weatherproof, and offers a strong bond that can withstand changes in temperature and humidity. It is also FDA-approved for indirect food contact, which indicates its safety and durability.
  2. Gorilla Wood Glue: Gorilla Wood Glue is another reliable option for exterior doors. It is water-resistant and forms a strong bond that is suitable for both interior and exterior applications. This glue is easy to work with and dries with a natural color.
  3. Franklin International 1414 Titebond III Ultimate Wood Glue: Similar to Titebond III, this glue is known for its waterproof and weatherproof qualities. It’s a preferred choice for outdoor projects, making it well-suited for exterior doors.
  4. DAP Plastic Wood-X All-Purpose Wood Filler with DryDex: While not a traditional wood glue, this product is a good choice for filling gaps and voids in exterior doors. It is waterproof, can be sanded, and painted over, providing a strong and weather-resistant solution.
  5. Epoxy Resin: Epoxy resin is another option for exterior doors, especially if you need an exceptionally strong bond. It’s known for its durability and resistance to moisture and temperature changes. However, epoxy can be a bit more challenging to work with than standard wood glues.

When using wood glue for exterior doors, follow these tips for the best results:

  • Prepare the surfaces: Ensure that the surfaces to be glued are clean, dry, and free from any contaminants that could affect the bond.
  • Apply an even layer: Apply the glue evenly to both surfaces that need to be bonded. Use a brush or a roller for larger areas.
  • Use clamps: Use clamps to hold the pieces together while the glue dries. This ensures a tight and secure bond.
  • Follow the manufacturer’s instructions: Always follow the manufacturer’s instructions for drying times and environmental conditions.
  • Consider finishing: After the glue has dried, you may want to finish the exterior door with a weather-resistant sealant or paint to provide additional protection.

Choosing a high-quality, waterproof wood glue and using proper application techniques will help ensure that your exterior doors remain strong and reliable even in challenging outdoor conditions.