Barrier Tape

Barrier Tape

Definition: Barrier Tape is a two-layer conservation material made from acid-free paper and aluminum foil. It is applied to wood and other non-archival materials in a frame package to prevent the transfer of acid, lignin, and other contaminants onto artwork and matting surfaces.

Characteristics

• Composed of acid-free paper bonded to an aluminum foil layer.
• Acts as a physical and chemical barrier to acid migration.
• Typically self-adhesive for easy application to frame rabbets or backing surfaces.
• Archival-grade and designed for long-term preservation framing.

Uses in Framing

• Applied to the inside rabbet of wooden picture frames to block acid transfer.
• Used to line wooden storage or display enclosures.
• Prevents off-gassing and acid outgassing from contaminating artwork.
• Often recommended in conservation framing practices.

Advantages

• Creates a reliable barrier against acid and lignin leaching.
• Cost-effective way to extend artwork longevity.
• Simple to apply with peel-and-stick adhesive backing.

Limitations

• Does not provide structural reinforcement-only chemical protection.
• Adhesive may weaken if applied to dusty, oily, or uneven wood surfaces.
• Should be used alongside other archival measures for complete protection.

Related Terms

• Fillet
• Tyvek
• Acid Outgassing
• Conservation Framing