In order to be able to use construction products, either a general building approval or an approval in individual cases must be applied for.

A general building approval is required if there are no technical building regulations and no generally recognized rules of technology for the construction product or if these deviate significantly.

Approval in individual cases can be applied for if a construction product is only to be used within the scope of a specific construction project.

Deutsches Institut für Bautechnik DIBt issues general building authority approvals for construction products, general type approvals, European Technical Assessments and expert opinions on compliance with building requirements.