Which type of joint compound is designed for drywall finishing?

The all-purpose joint compound is specifically formulated for drywall finishing due to its versatility and usability on various applications. It is designed to be applied in all finishing stages: taping the seams, filling and finishing the joints, and for special projects where a smooth finish is desired. This product is known for its ease of use, allowing for good adhesion and a smooth finish that can be sanded easily.

Fast-setting joint compound, while useful for quick repairs or projects that need to be completed rapidly, is not ideal for overall drywall finishing as it sets quickly and can be challenging to work with for extended periods. Lightweight joint compound refers to a product designed to reduce the weight for easier handling and application but may not necessarily provide the best finish for all applications. Exterior joint compound is specifically formulated for use in outdoor projects, where it needs to withstand conditions like moisture and temperature variations, making it unsuitable for interior drywall finishing.