Quick set hot mud is a great alternative to standard joint compound, particularly if you are planning to make minor drywall repairs and want to complete the drywall repair quickly.

Though the pros frequently use quick set hot mud for large drywall taping and mudding projects, I hesitate to suggest its use to weekend DIY warriors for similar size projects. It sets up fast and it is difficult to sand. My advice to DIY homeowners that want to tackle large drywall projects using this type of drywall mud; use the longer drying times, e.g. 90 minutes or more.

Hot mud comes in powder form and is sold in bags with drying times that range from 5 to 210 minutes.

Another reason this type of mud is ideal for drywall repair is that it contains glue. Thus it is helpful for gluing filler materials into drywall holes and cracks. Another advantage is that it shrinks less than standard drywall mud. Consequently, you do not have to worry about the crack re-showing after the hot mud dries.

Disadvantages

Besides setting up quickly, one additional disadvantage of is that it is tougher to sand. As a result, the pros frequently use it for applying their tape to the drywall, and then use standard joint compound for the top coats. Standard joint compound is much easier to sand.

Mixing Techniques

To make up a batch of quick set hot mud, it is best to first pour a little water into your drywall mud pan. Then slowly pour a little of the powder into the pan and mix it up with a 3-4 inch taping knife. After mixing the powder and water to a smooth consistency it is ready for use. If you need to adjust the consistency a little, add more water or powder appropriately.

Note: The mixing of quick set hot mud with water triggers the setting process of it. Consequently you want to limit the mixing until you are absolutely ready to begin applying it to the drywall. For example, if you spend 5 minutes mixing up a batch of 20 minute mud, you only have 10-15 minutes of application time.

Clean Tools Immediately after use

If you plan to use your drywall taping and mudding tools again, make sure you wash them off immediately and thoroughly after applying the hot mud mixture.