Making a Wilbert Lined Burial Vault

All quality Wilbert burial vaults begin with high-strength concrete, which differs from cement—a word commonly and mistakenly used for concrete.

Cement is a dry powder that becomes concrete after being added to a mixture of water, sand, and coarse aggregate.

Concrete provides numerous advantages over other materials in the construction of burial vaults. Aside from being inexpensive and universally available, concrete long outlasts alternatives such as wood or metal—which deteriorate in soil—in resisting underground water and chemicals.

Making a lined concrete burial vault requires the placement of a formed plastic liner over a male form for material support. Epoxy is then applied to the outside of the liner.

The epoxied Strentex® or ABS liners (cover and base) are positioned to their respective precision and reusable steel molds.

While the Unidex® epoxy is still wet, high-performance concrete is cast over the Strentex or ABS liner and consolidated into the mold. The steel mold provides support to the Strentex or ABS liner and establishes the product’s exterior shape.

Unidex epoxy and concrete then intermingle on a microscopic level and cure together. After 24 hours, the concrete has adequate strength for allowing the product’s removal from the mold along with the plastic liner.

Concrete continues to cure at a substantial rate for the first 28 days and at a lesser rate for many years to follow.

The extremely strong Unidex bond between the concrete and Strentex or ABS liner provides seamless “skin reinforcing” to the entire interior surface of the vault.

Strentex or ABS liners also protect the vault’s contents from outside elements.