US Custom House Offices Slide Show Click on an image to start the slide show and learn more about this project. Before repair: Water damaged plaster cornice and wall.Removing damaged plaster up to sound plaster.Applying acrylic consolidant to savable but soft plaster base coat.Applying acrylic consolidant to savable cornice substrate.Making new cornice bench runs.Installing new bench run sections.Sizing miter areas for installation.Cornice sections installed, ready for final detailing.Applying final base coat to wall patch using a float to bring up the aggregate.Completed repair.Removing deteriorated cornice plaster in next office area.New miters and cornice ready for final section.Final section installed.Completed repair.Removing damaged plaster cornice in next office area. Scratch coat is applied. Wooden ledger is used as a guide to install new cornice to meet up with existing.Installing new cornice section.Installing new cornice sections and starting to blend edges.Repair complete.