The specifier and the contractor should understand one another's concepts, capabilities and expectations before the work starts. It is likely that each can contribute information that is of use to the other in reaching a common understanding of what is to be done. Both may find the following checklist, or parts of it, useful in seeing that the job is accomplished successfully.

No materials used in or on the concrete or forms that can interfere with adhesion of the barrier material to the concrete, such as curing compounds, form release agents, or admixtures (polyethylene sheet lining for forms may be a useful alternative to release agents); design with absolute minimum number of penetrations through the barrier since penetrations greatly increase the probability of leakage; provision in the design for subsurface and surface drainage systems to reduce water pressure where this is useful; except where there are other overriding circumstances, preference given to barrier materials that are completely bonded to the concrete substrate (rather than unbonded barrier materials), thereby precluding possibility that water will migrate at the interface and make leakage difficult to trace if the membrane should rupture.

Approval and certification of the applicator by the manufacturer of the barrier system; agreement between designer and contractor on limitations and requirements for application, as imposed by weather conditions such as high or low temperature, wind or rain; continuous support provided for sheet barriers during handling so that punctures do not occur; weather-resistant flashing and other necessary protective materials provided for any barrier materials which are not resistant to ultraviolet light or ozone if these materials would otherwise be exposed to weather (for example, clear polyethylene films should not be left exposed).