This type of mud tends to shrink less than all-purpose premixed mud, but it hardens very quickly. Powdered drywall mud, also called “setting mud” or “hot mud,” contains chemicals that hasten hardening time when water is added to the powder. Some pros use all-purpose mud for the first mudding application and then switch to lightweight all-purpose mud for the second and third applications. Lightweight all-purpose mud also dries to a lighter hue, which makes it suitable for walls that will be painted a light color.Topping mud has fewer adhesion properties than all-purpose mud, so it’s not suitable for first and second coats. It dries to a bright white and is easy to sand, making it a good choice for walls that will be painted a light color. Topping mud is used as a final top coating.It’s suitable for all mudding applications, and is the best drywall mud for beginners. All-purpose mud goes on smoothly and usually begins to harden in a couple of hours, depending on the temperature and humidity in the room.Within this category, you’ll find all-purpose mud, topping mud, and lightweight all-purpose mud. Premixed joint compound is just that: The mud has already been mixed with water to a smooth consistency and is ready to be applied. Here’s the lowdown on the types of drywall mud you might find at the home improvement store: Premixed There are variations on each type, too, which can make it tough to choose the right product for your job. There are two main types of drywall mud: premixed and powdered. RELATED: The Dos and Don’ts of Repairing Drywall Types of Drywall Mud This guide to how to mud drywall outlines the materials required for the job, and walks DIYers through the process step by step. While professional drywall tapers make mudding look easy, do-it-yourselfers find that it takes practice, skill, and-of course-the right gear (in this case, the mud itself and the tape that prevents cracks from appearing in the seams).
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