Trading Card Protection & Storage — comic-book-storage
Humidity and Paper Preservation
Posted by RH Shield on
Paper is constantly absorbing and releasing moisture, and even small humidity swings can cause warping, curling, brittleness, or mold over time. Maintaining stable humidity — ideally between 45–55% RH for documents and 50–60% RH for trading cards in airtight storage — is the key to long‑term paper preservation. This guide explains how humidity affects paper fibers, why stability matters more than the exact number, and how controlled micro‑environments protect collectibles for decades.