Heat-activated aluminum foil tape must be heated to a temperature after being applied to the duct. What is that temperature range?

Heat-activated aluminum foil tape must be heated to a temperature after being applied to the duct. What is that temperature range?

• A. 550 to 600°F
• B. 400 to 450°F
• C. 200 to 250°F
• D. 650 to 700°F

Answer: (A)

Heat-activated aluminum foil tape relies on an adhesive that begins to bond only when exposed to a high temperature. After applying the tape to the duct seam, you apply heat to activate that adhesive and fuse the tape to the surface. The specified range of 550–600°F ensures the adhesive melts and flows properly, the foil conforms to the surface, and a durable, leak-tight seal is formed that can handle the duct’s operating conditions. Temperatures lower than this won’t fully activate the adhesive, resulting in weak bonding, while significantly higher temperatures can damage the tape or insulation.

Heat-activated aluminum foil tape relies on an adhesive that begins to bond only when exposed to a high temperature. After applying the tape to the duct seam, you apply heat to activate that adhesive and fuse the tape to the surface. The specified range of 550–600°F ensures the adhesive melts and flows properly, the foil conforms to the surface, and a durable, leak-tight seal is formed that can handle the duct’s operating conditions. Temperatures lower than this won’t fully activate the adhesive, resulting in weak bonding, while significantly higher temperatures can damage the tape or insulation.