Columbia Center Parking Deck Stairwell

 Parking Deck Concrete Stairwell Prior to Repairs and Coating 
 Parking Deck Concrete Stairwell After Repairs and New Coating

This is a concrete stairwell in a large commercial parking deck in the Detroit metro area.  The concrete was in a state of disrepair due to cracking, spalling, and poor patchwork.  We corrected these structural defects and then applied 2 coats of VOC-compliant epoxy, and 1 coat of low-VOC aliphatic polyurethane from PPG/Ameron.  The purpose of these coatings was to make the concrete stairwell area water-proof, slip-resistant, and aesthetically pleasing to pedestrians.

 Interior Concrete Stairwell of Parking Deck Prior to Coating
 Interior Concrete Stairwell of Parking Deck After Repairs and New Non-Slip Coating

Above and below are before and after photos of the project.  A light taupe color was chosen to give the stairwell an inviting sense of safety and to allow for dirt, debris and slip hazards to be readily apparent and avoided or removed .  A small, glass bead additive was used in the final coat of urethane to provide maximum slip resistance. 

 Ground Floor of Parking Deck Interior Concrete Stairwell After Surface Prep and Before Coating
 Ground Floor of Parking Deck Concrete Interior Stairwell After Application of New Non-Slip Coating

These particular coatings from PPG/Ameron were specially chosen for their unique characteristics of A) tensile elongation; B) corrosion protection; C) water-resistance; and D) cold weather exposure - all features needed in an outdoor, Midwest, freeze-thaw climate.

 Middle Floor of Parking Deck Interior Concrete Stairwell After New Non-Slip Coating
 Exterior Concrete Stairwell of Parking Deck After Repairs And Installation of New Non-Slip Coating