Red Seal Lather (Interior Systems Mechanic) Practice Exam 2025 - Free Lather Certification Practice Questions and Study Guide

Question: 1 / 400

What must be ensured when finishing drywall in a bathroom?

Only use standard drywall products

Install a vapor barrier

Use moisture-resistant products

When finishing drywall in a bathroom, it is crucial to use moisture-resistant products. This is because bathrooms are high-moisture environments that can lead to mold and mildew growth if regular drywall is used. Moisture-resistant drywall, often referred to as green board or blue board, is specifically designed to withstand the humid conditions typical in bathrooms, thereby enhancing longevity and durability.

Using moisture-resistant materials helps to prevent damage over time from the steam and moisture generated during activities like showering. These products typically have special coatings or treatments that inhibit water absorption and provide better protection against the elements present in a bathroom setting. In this way, selecting moisture-resistant products is a vital step in effectively completing drywall in areas exposed to high humidity.

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Apply multiple coats of paint

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