roof_removal_and_installation_on_twin_zurich_office_buildings_largeKnickerbocker Roofing & Paving Co. Inc. recently completed a significant project which showcased our company’s versatility, ingenuity, and safety-driven production capabilities.

The client, Zurich, is a major participant in the construction casualty insurance industry. The buildings, The Zurich Towers in Schaumburg, Illinois, are twin 20 story office towers complete with glass curtain walls on all exterior elevations. The specified scope of work included removal of the existing ballasted single-ply roof system and installation of a new multi-ply, fully adhered, modified bitumen roof system including tapered insulation installed on multiple roof levels. All work had to minimally inconvenience the buildings tenants while being cost-effective for the property owner. The professional estimating team at Knickerbocker Roofing drafted a detailed proposal which met these requirements and Knickerbocker was awarded the work.

We removed the existing river rock ballast via a commercial vacuum truck equipped with over 300 lineal feet of heavy duty hose which allowed us access to all roof levels. We assembled our hydraulic beam and guide wire system along the building exterior from roof top to grade. This approach allowed us to safely perform all material handling required on the project without utilizing the building interior. Building personnel were, on the whole, unaware of the new roof activity. This 58,800 square foot capital improvement to the Zurich Towers was completed on time, and on budget. Contact us today to learn how we can exceed your expectations on your next project.

Roofing of a Commercial Building Project

Project Description

We installed a new roof as well as removed an old roof on a 20 story twin tower commercial building.

Capabilities Applied/Processes


  • Replaced existing ballasted EPDM over tapered insulation roofing
  • Removed existing roof system ballast via vacuum system staged at a grade
  • Removed all other debris and stacked the job with new material via our external guide line enhanced hydraulic beam hoisting apparatus

Twin 20 story towers with complete glass curtain walls on exterior elevations
Safely and in timely fashion install new quality roofing system by means which will be the least inconvenient to the tenants and most cost effective for the owner.

Equipment Used to Install Roof

Enhanced hydraulic beam hoisting apparatus

  • Power carts
  • Commercial grade adhesive sprayers
  • Propane Torches
Roof Dimensions

58,800 sq. ft.

Material Used

Vapor barrier
Tapered insulation
Cover board

Base sheet
Granulated cap sheet

Industry for Use

Office building
Construction industry

Delivery/Turnaround Time

6 months 16 days

Project Location

Schaumburg, Illinois

Project Name

Roofing of a Commercial Building