This is one of the concrete stairwells in a large commercial parking deck in the Detroit metro area.  The concrete was in a state of relative disrepair because of unsightly cracking, spalling, and patchwork.  An epoxy mortar from Sika, and epoxy adhesive from Adhesives Technology, were used to correct all of these structural defects before applying 2 coats of VOC-compliant epoxy, and 1 coat of low-VOC aliphatic polyurethane from PPG/Ameron.  The purpose of these extremely durable coatings was to make the concrete stairwell area:  A) water-proof; B) impervious to chlorides & carbonation; C) slip-resistant; and D) aesthetically pleasing to pedestrians.
 

     Above and below are several before/after photos of the project.  A light taupe tone was chosen for the color of the stairwell to give pedestrians using it an inviting, neutral sense of safety, and allowing for debris, dirt, and other slip hazards to be readily apparent, and avoided or removed .  A small, glass bead additive was used on the top of the final coat of urethane to provide maximum slip resistance.  Finally, these extremely durable 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, Northern Midwest, freeze-thaw climate.
 




 


 

                             
 

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