In Vikings War of Clans your Vault protects some of your resources after an attack on your town.
When your town is attacked any resources above your Vault limit can be plundered by attacking Jarl’s. Upgrading the level of your Vault increases the amount of resources that are protected. Note that your Vault does not protect silver until you reach level 21.
At level 21 1 million resources are protected (including silver).
You should not neglect your Vault as it provides you with valuable resources to heal your troops after an attack. When going into war it is advisable to keep your resources below your Vault level. You can send any excess resources to a shielded clan member.
Your vault is one of the only buildings that just requires your Palace to upgrade each level.
The table below has the build cost for each upgrade level from 1 to 21, the build time (before boosts), buildings required and the influence rewarded.
Vault Building Requirements
Please feel free to leave any details you have from Vikings War of Clans by commenting below and we will update the data accordingly.