Which statement about heat resistant tape application is true?

• A. It should not overlap previous wraps
• B. It should overlap by about 50% onto the last wrap
• C. It should overlap by about 80%
• D. It should overlap exactly 10%

Answer: (B)

When applying heat resistant tape to wrap insulation, the goal is to create a continuous, gap-free layer. Each new turn should overlap the previous wrap by about 50%, so roughly half the width of the wrap lies over the edge of the last layer. This overlap ensures the seam is fully covered and the tape adheres well to both the underlying wrap and the new turn, maintaining effective insulation and preventing unraveling. Overlapping more than that (around 80%) wastes tape and makes the wrap bulky, which can complicate fitting or cause uneven coverage. Overlapping only about 10% leaves exposed edges and gaps, reducing insulation integrity.