Red Seal Lather (Interior Systems Mechanic) Practice Exam

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What is meant by installing "hot mud" in drywall work?

Using wet joint compound
Using finishing-type joint compound
Using setting-type joint compound that hardens quickly
Using compound with high adhesive properties

The correct answer is: Using setting-type joint compound that hardens quickly

Installing "hot mud" in drywall work refers specifically to the use of setting-type joint compound that hardens quickly. This type of compound contains additives that allow it to set as opposed to drying out through evaporation, making it a preferred choice for certain applications where a quick turnaround is desirable. For example, it is often used for faster repair jobs or when multiple coats need to be applied in a single day. The quick-setting nature of hot mud provides the advantage of allowing the contractor to move on to sanding and finishing sooner than with conventional drying compounds, which can take significantly longer to become workable. Additionally, since it hardens through a chemical reaction, it is less affected by environmental conditions, which can be crucial in varying temperature and humidity levels on job sites.