255 St Paul

A broad array of high-tech building materials were used on this project. GP DensElement, a glass fiber sheathing board with an air barrier system integrated into the sheathing, used with Prosoco caulking made up 85% of the exterior air barrier system. This reduced the multiple subs installing the exterior wall system and increased the flow of the schedule. This project also required USG drywall, as this was the only manufacture’s UL that meets a load rating of 100%. USG sheathing was required at load bearing walls, and ICI subcontracted Big Horn to install STO Gold over the USG sheathing. ICI worked closely with DensElement and Prosoco to verify both systems would comply with Air barrier requirements.