Conservation grade framing materials are materials that meet archival standards and are suitable for use in the preservation of artwork, documents, and historical objects. These materials are designed to be chemically stable, free of harmful acids or lignin, and often include UV protection to minimize long-term deterioration.

Key Characteristics

Acid-Free: Prevents chemical reactions that cause yellowing and brittleness.
Lignin-Free: Ensures that paper- and wood-based products do not break down over time.
UV Protection: Glazing that blocks harmful ultraviolet rays, reducing fading and color loss.
Reversible: Materials and adhesives designed for safe removal without damaging the object.

Examples of Conservation Grade Materials

Museum Board: 100% cotton, acid-free, lignin-free matting board.
UV-Filtering Glazing: Glass or acrylic that filters 97-99% of harmful UV light.
Wheat Paste Hinges: Reversible, archival hinging method using Japanese paper and wheat starch paste.
Conservation Backing Boards: Acid-free backings that protect against pollutants and mechanical damage.

Applications

Museum-quality framing of photographs, works on paper, and textiles.
Archival storage of family heirlooms and documents.
Exhibition framing where preservation and reversibility are required.

Best Practices

Always use acid-free and lignin-free matting and backboards.
Select glazing with UV filtering for works displayed in lighted environments.
Use reversible mounting techniques (e.g., wheat paste hinges) instead of permanent adhesives.
Seal frames with dust covers and appropriate backing to limit exposure to pollutants and insects.
Verify materials meet international standards such as ISO 18916 (Photographic Activity Test).

Professional Standards & Guidelines

American Institute for Conservation (AIC): Defines safe materials for conservation framing.
Library of Congress: Maintains best practices for archival matting, hinging, and framing.
ISO Standards: Provides testing protocols for materials used in conservation framing.

Conservation Grade Framing Materials