The engineering consultant on the Atlantis renovation is Joe Shuffleton, a professional engineer and owner of Engineering and Technical Consultants Inc., Sterling, VA, who has been involved with the building since the 1980s.
Based on 30 years of experience in construction, Shuffleton
specified Dow Corningâ€š 795 Silicone Building Sealant, a neutral-cure, high-performance material, for more than 600 new double-pane aluminum windows and sliding doors in the 200-unit structure.
"We needed sealants that would stand up to pounding rain, chlorides from the ocean air and windblown sand that comes blasting in from the beach," he
said.For control joints in the pre-cast concrete, Shuffleton
selected 790 Silicone Building Sealant, an ultra-low modulus formulation with a reputation for excellent service in buildings with extreme movement.
Exterior Walls: A Sealing Challenge
Sealing the hairline cracks that were developing in the precast exterior required something of a novel approach.Shuffleton
wanted to avoid painstaking hand sealing work, and he
knew that the building's aesthetics also needed to be addressed, so he
investigated a silicone exterior coating that he'd seen on other buildings in the area.
"The typical clear masonry sealers wouldn't bridge the small cracks that we'd observed at the Atlantis," Shuffleton
said, "and they wouldn't have brought a significant improvement to the appearance.
"Aside from the deterioration, this building was just bare concrete," Shuffleton