Why use polyurethane glue?

Polyurethane glue, also known as PU glue, is a type of adhesive that offers several advantages over other types of glue. Here are some reasons why polyurethane glue is commonly used:

1. Strong bonding: Polyurethane glue forms an incredibly strong bond, making it suitable for a wide range of applications. It can bond various materials, including wood, metal, plastic, stone, and ceramics.

2. Versatility: This glue is highly versatile and can be used for both indoor and outdoor projects. It is resistant to moisture, heat, and chemicals, making it suitable for applications in different environments.

3. Expansion properties: Polyurethane glue expands as it cures, filling gaps and creating a tight bond. This expansion helps to compensate for slight irregularities or gaps in the surfaces being joined, resulting in a stronger bond.

4. Waterproof: Polyurethane glue is water-resistant, making it ideal for projects that require a waterproof bond. It can be used for applications like boat repairs, outdoor furniture, or bonding in humid environments.

5. Durable and long-lasting: Once cured, polyurethane glue forms a durable bond that can withstand heavy loads, vibrations, and impacts. It is known for its long-lasting properties, making it suitable for permanent bonding applications.

6. Easy to use: Polyurethane glue is typically available in a liquid form, making it easy to apply. It can be used with a variety of applicators, such as brushes or squeeze bottles. Some polyurethane glues also come in convenient dispensers with applicator tips for precise application.

7. Sandable and paintable: Once cured, polyurethane glue can be sanded and painted, allowing for a seamless finish. This makes it suitable for applications where aesthetics are important, such as woodworking or crafts.

It is important to note that polyurethane glue has a longer curing time compared to other adhesives, typically requiring several hours or even overnight to fully set. Additionally, it can expand significantly during the curing process, so it is essential to use it sparingly and clamp the surfaces being bonded to prevent excessive foaming.