To remove existing roofing to roof decking. Repair roof deck as needed and install raised curbs for the HVAC units and repair or replace existing roof drains as needed. To install a "Class A" Built-Up Roof System as manufactured by Herbert Malarkey Roofing Co. and as listed in W-H Certifications Listings Directory on page 553, first listing, 1995 edition. To consist of 1-ply of #515 base sheet, mechanically fastened; 2-plies of #500 and a Cap Sheet of #502 Mineral surface, all hot mopped to base sheet. Installed per manufacture's installation instructions and Chapter 15, 1994 UBC. drs