If you choose burial after the cremation, it's important to understand why you need a cremation vault. There are several factors that challenge the integrity of cremation vault- the same ones that affect burial vaults and liners. Heavy equipment necessary for maintaining the cemetery grounds passes over the cremation vault during cemetery operations is the main danger to these cremation vaults and containers. Cremation vaults are made of concrete, and may feature plastic linings (which help protect against moisture), decorative elements, tongue and groove seals and metal reinforcements. Designed with the same quality manufacturing construction as burial vaults, these smaller cremation vaults incorporate all of the same protective principals as full size casket vaults.