Project: House of Rest Zelehnogorsk
Location: St. Petersburg, RUSSIA
Date: 1995
Description: This cathedral is of immense importance in Russia as the last Russian Emperor Nicholas II and his family are buried in St. Catherine Chapel (Ekaterininsky Predel) of this Peteropavolovsk Cathedral in St. Petersburg.

This project underwent a major repair and maintenance treatment in 1995. At that time, the Penetron system was used for the protection and waterproofing of all above and below grade masonry.