They are both containers that are used in ground burial and are required by most cemeteries.
In certain cases you may not be able to use a container or vault if a prior burial did not use one.
Certain states do allow 3 casketed remains in one grave but if you use a container or vault the cemetery would only allow 2 casketed remains in the grave due to the lack of space in that grave.
An outer burial container also known as a grave liner is an unlined container that houses a casket from the weight of the earth and heavy maintenance equipment that will pass over the grave. It does not resist water but will preserve the beauty of the cemetery or memorial park by preventing the ground from settling.
A burial vault is a lined and sealed outer receptacle that houses a casket from the weight of the earth and heavy maintenance equipment that will pass over the grave. It also helps resist water and preserve the beauty of the cemetery or memorial park by preventing the ground from settling.
Burial vaults like caskets can be personalized and offer protection. Outer burial container or grave liners do not.
They are both made of concrete but vaults are lined with materials like plastic, marble, stainless steel, copper, and bronze.
