Barrier Film

Barrier Film

Definition: Barrier Film is a protective layer of material designed to prevent the leaching of soil, moisture, and acid migration into artwork, documents, or framing materials. It plays an important role in archival framing and conservation practices by adding a stable separation between the artwork and potentially harmful materials.

Characteristics

• Resists acid migration from non-archival materials.
• Acts as a moisture and contaminant barrier.
• Typically made of polyester or other inert, stable plastics.
• Lightweight, flexible, and transparent or translucent in form.

Uses in Framing

• Placed between the backing board and artwork to block contaminants.
• Used in conservation-grade packaging and storage of artworks.
• Prevents off-gassing from non-archival materials inside the frame.
• Helps protect photographs, fine art prints, and sensitive documents.

Advantages

• Long-term preservation of artwork and paper materials.
• Relatively inexpensive compared to more elaborate preservation systems.
• Compatible with both storage and display purposes.

Limitations

• Must be used in combination with other archival materials for best results.
• Does not provide structural support on its own.
• Incorrect application may lead to trapped moisture if not properly ventilated.

Related Terms

• Dartek
• Mylar
• Barrier Tape
• Glassine