Store records vertically in a cool, dry place
Keep records away from direct sunlight and heat sources
Use proper inner and outer sleeves
Avoid stacking records horizontally for long periods
Place the record between two flat glass plates
Warm the record gently in a low-temperature environment
Let it cool completely while kept flat
Use a record flattener or vinyl flattening machine
Try a professional vinyl repair service
Replace severely warped records if playback is affected