How much must the tape overlap the shiplap seam on both sides when applying aluminum foil tape over a stapled shiplap seam?

How much must the tape overlap the shiplap seam on both sides when applying aluminum foil tape over a stapled shiplap seam?

• A. At least one inch
• B. No overlap
• C. Two inches
• D. Three-quarters inch

Answer: (A)

The key idea is to create a reliable seal by giving the tape a solid margin beyond the seam. When you apply aluminum foil tape over a stapled shiplap seam, you want the tape to extend past the seam on both sides so the adhesive can grip clean surfaces and cover the staples. This overlap helps prevent gaps where air or moisture could travel and reduces the chance of the tape peeling at the edges. A one-inch overlap on each side provides enough coverage and bond without wasting material. Less than that can leave the seam exposed or prone to peeling, while more overlap isn’t necessary for this purpose.

The key idea is to create a reliable seal by giving the tape a solid margin beyond the seam. When you apply aluminum foil tape over a stapled shiplap seam, you want the tape to extend past the seam on both sides so the adhesive can grip clean surfaces and cover the staples. This overlap helps prevent gaps where air or moisture could travel and reduces the chance of the tape peeling at the edges. A one-inch overlap on each side provides enough coverage and bond without wasting material. Less than that can leave the seam exposed or prone to peeling, while more overlap isn’t necessary for this purpose.