The 20-story Atlantis condominium in Ocean City, Md., is undergoing a $4.1 million rehabilitation, using silicone sealants and an exterior coating provided by Dow Corning.

The rehab is intended to eliminate water intrusion and provide a new aesthetic appeal to the 30-year-old building.

Engineering consultants on the renovation chose the Midland, Mich.-based Dow Corning's 795 silicone building sealant, a neutral-cure material used on more than 600 double-pane aluminum windows and sliding doors in the 200-unit structure. To address the building's cracking and appearance issues, the company's AllGuard silicone elastomeric coating was chosen for use on all exterior walls.

Rick Delargey, a principal with general contractor Structural Maintenance Systems, estimated that by the time the project is complete later this year, crews will have installed approximately 25,000 lineal feet of the sealant around doors and windows, and approximately 20,000 lineal feet of 790 silicone building sealant in concrete wall joints.

As the work progressed, tests have been performed regularly to spot-check sealant installation and coating thickness, and to confirm the overall integrity of the building envelope.