The project consists of a comprehensive roofing renewals program at Buildings 1, 2, and 4. The work includes the removal of the existing low-slope roof assembly down to the structural deck, installing an adhered roof assembly with air barrier, vapor retarder, code-compliant tapered insulation, rigid coverboard, and modified-bitumen membrane roof. Water will be managed internally, with new drains integrated into existing plumbing in sumped profiles. Cold fluid-applied liquid flashings will be employed at critical transitions, details, and penetrations. Supporting scopes of work at Building 1 include the construction of framed parapets, and addition of overflow drains, including discharge penetrations at the exterior walls and new overflow rainwater leaders in the interstitial ceiling space at the upper floor. At Building 2, new waterproofing will be provided at the exposed concrete structure and be integrated with the lower roof. A new skylight will be installed at the low roof zone as well. There will be no change to the occupancy, building footprint(s), construction type, parking, or rated assemblies. The buildings are intended to remain occupied and functional throughout the renewals construction.
