The Hennings Building Roof Renewal is underway 

Posted on: August 25, 2025

Estimated construction dates: August 2025 – January 2026

Construction on the Hennings Buildings Roof Renewal has begun. 

This project will renew the aging Hennings Building roof systems, remove redundant mechanical systems, and complete localized, minimally invasive seismic improvements. The new roofing systems will improve the energy efficiency of the building aligned with sustainability goals, helping to eliminate current and potential leaks into the building, providing protection from the elements. 

Here’s what to expect during construction 

  • Occupants in the Hennings Building should expect noise from ongoing construction activities. All efforts will be made to keep the disruption to a minimum.  
  • Expect short-term crane activity in Volkoff Lane. General access to this route will be maintained. 
  • A laydown area will be established next to the building, on the North East corner for an external scaffold, crane access, waste bin and general access for the project. 
  • We recommend that windows are kept closed to reduce the effects of roof renewal construction noise and odours entering the interior spaces. 
  • To accommodate the work, some HVAC and other mechanical systems will need to be shut down for short periods with minimal downtime expected to allow regular building functions to continue during normal hours. 

December & January

  • All flame torch membrane installation work at the main roof level is complete. Perimeter metal flashing PMMA (liquid membrane) detailing work continuing throughout all roof areas.
  • Sheet metal flashing work will continue until mid to late January 2026.
  • The reinstatement of retained mechanical systems (exhausts and fume hood to #116) is expected to be completed by mid-January, followed by testing and start up towards the end of January.
  • Renewal of small roof areas to the perimeter of the building located between levels 1 & 2, are to be coordinated and completed over the next 3-6 weeks (weather dependent). This includes the main entrance canopy (north elevation) and 4 small inset roof areas on the east and west elevations of the building.
  • New access stairs for various roof areas are currently being manufactured with installation via crane and on the main roof areas expected in late January 2026.

For questions or concerns regarding the construction, please contact:  

Learn more about construction on campus.

Thank you for your cooperation and understanding while we undertake this important project.