The Oklahoma Purchasing System (TOPS)

Cooperative Construction Contract for all Public Agencies

The Oklahoma Purchasing System (“TOPS”) is a Cooperative Purchasing Program established under the Oklahoma Interlocal Cooperation Act, Title 74 O.S. § 1001, et seq. It is utilized by member schools, colleges, universities, cities, counties, and other government entities as authorized by each’s jurisdictional legal requirements. Atoka Public Schools, located in Atoka, Oklahoma, is the lead government agency for the cooperative. 

Weatherproofing Technologies, Inc. (WTI), the affiliated construction services company of Tremco roofing, is proud to be a TOPS awarded vendor of TOPS contract RCSP 230401 BUILDING ENVELOPE. 

WTI and Tremco Roofing are part of Tremco Construction Products Group, the industry’s only provider of comprehensive systems and services for all six sides of the building enclosure. This collective expertise means TOPS participants can benefit from the breadth and depth of building envelope solutions for every environment, and the technical know-how to solve your most challenging building envelope issues. 


Capabilities include:

  • COMPREHENSIVE ROOFING SERVICES: restoration, repair, maintenance, and replacement 
  • ROOF MANAGEMENT PROGRAMS for increased ROI 
  • NATIONAL COOPERATIVE CONTRACTOR NETWORK to compliantly procure solutions through a network of highly qualified, local, best-in-class pre-qualified contractors 
  • ADVANCED DIAGNOSTICS for early intervention before small problems escalate 
  • ENVIRONMENTAL AND HVAC TESTING to improve indoor air quality 


To learn more please visit tops-usa.org 

Available Literature

TOPS Flyer