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McGrath & Associates to convert PolyAd Services warehouse in Earth City to $8.4 million Plastic Additives Competence Center

April 2, 2018

ST. LOUIS, MO – McGrath & Associates has begun design/build work to convert 85,000-square-feet of warehouse space at the PolyAd Services facility in Earth City into a combined $8.4 million production, R&D labs, headquarters and conference center for ALTANA’s BYK North America Plastics team. PolyAd Services, a manufacturer of plastics additives, was acquired last year by the German specialty chemicals company BYK (a member of the ALTANA group). The construction project is scheduled for completion in July 2018.

The new space will accommodate PolyAd R&D labs and offices, Addcomp production, a shared plastics laboratory, a seminar room to seat up to 42 people, and smaller conference rooms for break-out sessions, all of which will support on-site customer seminars and collaboration projects for the new BYK Plastic Additives Competence Center.

McGrath completed design and construction of PolyAd Services’ plastic additives manufacturing facility in the same building in November 2015.


McGrath & Associates is a 100 percent employee-owned general contractor and construction management firm specializing in commercial, health care, industrial, institutional and pharmaceutical construction projects since 1983. McGrath is ranked among the top 20 largest general contractors in St. Louis by the St. Louis Business Journal and was named 2016 “General Contractor of the Year” by the American Subcontractors Association Midwest Council, an award the company has received six times and has been nominated for 20 times. McGrath is a member of the Associated General Contractors and the St. Louis Construction OSHA Partnership. For more information, call Ken Knobbe at (314) 772-7600 or visit

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