A better way to store your coins is to to get a HD hardware wallet like the Ledger Nano S, or KeepKey. These paper wallets are too vulnerable to destruction. With an HD wallet you get a 24 word seed (see BIP39) and if anything ever happens to the wallet you just buy a new one and restore from the see. To protect your seed you can carve the words into a block of brass which has a high enough melting point that it should survive a house fire. You can use something like a Bantam Milling machine if you don't want to do it by hand.
For smaller amounts of money there is also OpenDime. They don't provide a back-up mechanism though so if the hardware goes your money is lost forever.
For smaller amounts of money there is also OpenDime. They don't provide a back-up mechanism though so if the hardware goes your money is lost forever.