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Archival Backing Substrates

Foamboard

Archival acid-free foam core backing boards engineered to create a chemically neutral, rigid structural barrier behind fine art prints, watercolors, diplomas, and photographs.

Rashid Jalili Owner & Master Framer Jason J. Duke Digital Gallery Director & Curator
Curator's Brief 100% Acid-Free Archival Backing: Chemically neutral 3/16" rigid barrier boards to prevent rear acid burn.
↓ Jump to Complete Shopper's Guide
01 // Stop Acid Burn

Why Cardboard Ruins Art

Corrugated cardboard outgasses lignin acid into the back of art. Archival foamboard seals the rear with an alkaline barrier.

See Conservation Stack ↓
02 // Match Outer Size

Exact Frame Fit

Pick the exact same outer dimension as your Ready-Made Picture Frame and Crescent Select® Matboard.

Shop Matching Mats →
03 // Reversible Mounting

Never Dry-Mount Fine Art

Attach artwork between your matboard and acid-free foamboard using reversible archival T-hinges along the top edge.

Shop Picture Frames →
04 // Custom & Bulk Cuts

Up to 40"x60" Sheets

Need custom fractional dimensions or bulk wholesale cases for an exhibition? Contact our Farmingdale cutting floor.

Custom Foamboard Guide →
The Collector's Selection Dossier // Archival Backing

Complete Shopper's Guide to Acid-Free Archival Foamboard

True conservation framing protects your artwork from both directions: UV-blocking glazing in the front, and a chemically neutral, acid-free barrier in the back. Open the guides below to see how archival foamboard completes your framing assembly.

Corrugated brown cardboard, chipboard, and standard stationery-store foamboard contain raw wood-pulp lignin. Within a few years inside a sealed frame, those boards outgas acidic vapors that migrate straight into the back of fine art paper, leaving brittle brown stripes ("backboard burn").

When framing any photograph, watercolor, giclée print, or diploma, match the same outer dimension across all four studio components:

Never use spray glue, masking tape, or irreversible heat dry-mounting on valuable prints, originals, or diplomas! Instead, attach your artwork to the Acid-Free Foamboard or Window Mat using reversible acid-free linen/paper T-hinges along the top edge only. Read Diploma Framing: Preserving Your Greatest Achievement.

Need Custom-Cut Archival Backing or Bulk Sheets?

We custom-cut acid-free archival foamboards to your exact fractional dimensions and supply wholesale volume orders for galleries, artists, and institutions.