When OSF Saint Francis Medical Center in Peoria, Ill., built its seven-story parking garage, it coated some portions of the concrete pavement with urethane but left others bare.
So when P.J. Hoerr of Peoria, Ill., was hired to improve traffic flow within the post-tension structure, the general contractor decided to improve the concrete surfaces as well.
That work was subcontracted to the Springfield, Ill., branch of Western Specialty Contractors (formerly Western Waterproofing Co.). The century-old, nationwide family business specializes in masonry and concrete restoration, waterproofing, and specialty roofing.
Over six months, company crews removed 40,000 feet of pavement markings, sealed 191,500 square feet of bare concrete with a penetrating water repellent, and applied 100,000 square feet of waterproof urethane coating.
At the exposed concrete surfaces, they removed existing pavement markings and striping via a combination of shot-blasting and hand-grinding. Then, to reduce infiltration of road salt, de-icers, and other corrosive chemicals, they sealed the exposed surfaces with a 100% silane, clear penetrating water repellent .
Surfaces that had been coated with urethane were shot-blasted to remove pavement markings and received a new top coat to cover the old markings.
The staircase and drive lanes between the parking stalls exhibited bare concrete and worn coating due to consistent traffic. They were also shot-blasted and re-coated to further protect and waterproof the structure.
Restoration work like this may not be as "fun and sexy" as decorative work, but there's much more demand for it nationwide as publicly and privately owned concrete structures age.