When applying heat resistant tape over hot tracer lines, what is the recommended overlap?

• A. Overlapping about 25% onto the last wrap
• B. Overlapping about 50% onto the last wrap
• C. Overlapping about 75% onto the last wrap
• D. No overlap

Answer: (B)

When wrapping heat resistant tape over hot tracer lines, you want each new turn to cover part of the previous one so there are no gaps exposing the line. An overlap of about half the tape width provides reliable continuity of coverage, keeping the protective layer intact as temperatures rise and the tape is stressed. This amount balances covering the seam without creating excessive thickness that can bulk up the wrap or hinder adhesion. Too little overlap leaves gaps that can expose the tracer line to heat and cause edges to lift, while too much overlap can add unnecessary bulk and potentially trap heat or air pockets. So, around 50% overlap gives the best combination of seal and practicality.