Specifications include, but are not limited to: replacement of the existing roof for Building 23 (MHU) at JTVCC with new SBS modified system on new tapered insulation at center penthouse areas. The small shingle roof areas in the center penthouse area are also part of the base bid. The flat roof area work shall include the replacement of the metal flashing, provide new strainers and clamping rings for existing roof drains / overflow roof drains (Base Bid). New shingle roofing system on existing plywood decking over metal decking at the four (4) housing wings (Alternate No. 2). The sloped roof housing wing area work shall also include the replacement of the metal flashing and roofing accessories as required to complete the roof replacements