WARDFlex can be buried, BUT you cannot directly bury it in the ground or install it under concrete slabs or walkways. You should insert WARDFlex into a nonmetallic conduit like PVC if burial is necessary. Also, remember to secure any open end of the conduit with PVC tape to prevent it from water getting inside. However, there is one variant, WARDFlex Underground, which needs no additional sleeves to be buried.