Description
White Acid Free Foam Board is the professional standard for archival mounting, conservation framing, and long-term preservation of valuable artwork, photographs, and documents. Featuring a white extruded polystyrene foam core with bright white acid-free uncoated paper facers on both sides, this premium archival foam board protects your most valuable pieces from deterioration caused by acidity, humidity, and atmospheric pollutants.
Available in 1/8" and 3/16" thicknesses in sheet sizes 32" × 40", 20" × 30", and 40" × 60". The acid-free facers meet the Library of Congress standards for conservation framing, with paper buffered with calcium carbonate to a pH between 7.7 and 8.5. This archival-quality construction ensures your artwork and photographs are protected for generations without the risk of acid migration or deterioration over time.
Unlike standard foam board with clay-coated facers, this acid free board features smooth bright white uncoated paper facers specifically developed for mounting and framing applications. No additional backing is required, saving time and framing materials. The premium extruded foam core provides a smooth, flat surface without the distracting read-through lines commonly seen in corrugated cardboard, making it the ideal backer for professional conservation framing.
Features
- Acid-free facers meet Library of Congress conservation standards
- Bright white uncoated paper facers on both sides
- pH between 7.7 and 8.5 (calcium carbonate buffered)
- Protects against acid migration and deterioration
- Smooth flat surface - no corrugated read-through lines
- No additional backing required for framing
- Lightweight and easy to cut and handle
- Dimensionally stable and warp resistant
- Made in the USA
- Sustainable forestry certified paper facers
Applications of White Acid Free Foam Board
- Conservation & Archival Framing
- Fine Art Mounting & Matting
- Photograph Preservation
- Museum & Gallery Displays
- Document Preservation
- Valuable Certificate Framing
- Needlework & Textile Mounting
- Heirloom Photo Mounting
- Professional Picture Framing
- Library & Archival Applications
Available Sizes & Options
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1/8" Thickness
Available Sizes: 32" × 40" (25-pack)
Lightweight option for smaller frames, photographs, and documents requiring archival protection
3/16" Thickness
Available Sizes: 20" × 30" (10-pack) | 40" × 60" (25-pack)
Standard thickness for professional picture framing, artwork mounting, and conservation applications
White vs Antique White Acid Free - Which Should I Choose?
- Bright White: Crisp white surface ideal for contemporary artwork, color photography, and modern framing styles where a clean white backing is preferred
- Antique White: Warm off-white surface preferred for traditional framing, older photographs, and artwork where a neutral warm tone complements the piece better
- Both: Meet the same Library of Congress archival standards and provide identical acid-free protection
Need Custom Sizes or Quantities?
We can source custom sheet sizes and pack quantities for framing shops and large projects. Request a custom quote or call 844-970-0650 for volume pricing.
Frequently Asked Questions
What is acid free foam board used for?
Acid free foam board is used for conservation framing, archival mounting, and long-term preservation of valuable artwork, photographs, documents, and heirlooms. The acid-free construction prevents the yellowing and deterioration caused by standard foam board, making it the professional standard for museum-quality framing and archival applications.
What's the difference between acid free and regular foam board?
Regular foam board has clay-coated paper facers that contain acids which can migrate into artwork and photographs over time, causing yellowing and deterioration. Acid free foam board has specially buffered paper facers with a pH between 7.7 and 8.5, neutralizing pollutants and preventing acid migration. For anything you want to preserve long-term, acid free is essential.
What's the difference between white and antique white acid free foam board?
Both provide identical archival acid-free protection and meet Library of Congress conservation standards. The difference is purely aesthetic - bright white has a crisp clean surface ideal for contemporary artwork and color photography, while antique white has a warm off-white tone that complements traditional framing, older photographs, and artwork where a neutral warm backing is preferred.
What thickness should I choose for picture framing?
3/16" is the most popular thickness for professional picture framing as it provides excellent rigidity and dimensional stability for larger pieces. Choose 1/8" for smaller frames, lightweight photographs, or when frame depth is limited. Both thicknesses provide the same archival acid-free protection - the choice is primarily based on the size and weight of what you're framing.
