Trading Card Protection & Storage — bgs-storage
Long‑Term Storage for Graded Cards (PSA, BGS, CGC Slabs)
Posted by RH Shield on
Graded cards are protected from physical damage, but PSA, BGS, and CGC slabs are not airtight — meaning humidity can still cause warping over time. Long‑term preservation requires storing slabs in a stable 50% RH environment inside airtight containers, preventing the moisture swings that lead to curling or bowing. This guide explains how slabs behave, the best storage methods, and how to keep graded cards investment‑ready for decades.