GOC1246925-GOC375961-GOC754685-CT-NIE - Construction Services - Roof Replacement, Building Exterior Cladding Improvement

  GOC1246925 - Work of this Contract comprises exterior cladding improvements to 130 Syndicate Avenue South, Thunder Bay, Ontario. Cladding improvement work is comprised of various work including local cleaning, stone and brick re-pointing, stone repair, stone replacement, and flashing removal and replacement.
Please see GOC1246925 Plans and Specs for detailed scope of work

GOC375961 - Work of this Contract comprises removal and replacement of roofing at the Government
of Canada Building located at 130 Syndicate Avenue South, Thunder Bay, ON. The work generally includes the following, as per the Contract Drawings:

1. Remove existing built-up roofing, insulation and vapour barrier and replace with new fully adhered EPDM roofing, increased insulation including slope package, coverboard and vapour barrier. Scope of work includes main roof and three penthouses, and two lower roofs. Build-up parapets as indicated to suit new top of roof elevation.
2. Existing copper flashing (green) must remain. Building is Designated Heritage Building. Replace all parapet copper flashing sealant.
3. Four new Roof Top Units (RTU’s) are present and cannot be moved/removed/reinstated. New curbs for RTU’s have been prepared to accept new EPDM roofing.
4. Other RTU’s and rooftop mechanical equipment and services require temporary support, and build-up of curbs/supports to suit new top or roofing elevation. Refer to Environmental Procedures and Commissioning related specifications for prescribed procedures.
5. A Designated Substance Survey (DSS) was completed (see Appendix A) and identified asbestos in caulking present at the Freight Elevator Room penthouse base flashing location. Contractor must review the DSS. Asbestos abatement must be completed prior to construction, by a certified Contractor who must determine the risk level prior to abatement works.
6. Penthouse doors must be raised to suit new top of roofing elevation.
7. Base flashings are to be removed and replaced around penthouses, existing parapets, roof penetrations, roof units.
8. Existing roof penetrations and services must be extended to suit new top of roof elevation.
9. Remove existing wood walk-way and replace with new walkway pavers and additional walkway pavers.
10. Construct steel guards at parapets as indicated on drawings.