Specifications include, but are not limited to: The project is a full roof replacement, removal of existing, new membrane, tapper insulation, increased r-value insulation, new fascia trim and gutters; A. Remove any and all roofing material from surface of roof. This includes, but is not limited towaterproofing membrane, insulation, edge metal, roofing accessories, etc. B. Once existing roofing material is removed, inspect the wood decking substrate for any deficiencies and/or failures. Decking substrate is to be repaired/ replaced as a unit cost. C. Mechanically fastener 3-layer of 2" polyisocyanurate insulation (R-30) and a 1/4":12 slopedtapered polyisocyanurate directly into the wood decking substrate in the proper wind-up lift pattern. D. Install ½" Dens Deck recovery board over the new insulation system using a type III / IV hot asphalt at a rate of 25 lbs. / 100 square feet. E. Install new nailers around perimeter to accommodate the new roofing system height. Use compatible contractor provided screws and/or Ring Shank nails when installing the wood. Install two fasteners (pair them up) and install pairs every 16" with staggers. When usingtreated wood, all fasteners will comply with ASTM A153 by using type 304 or Type 316stainless-steel fasteners and connectors for corrosion resistance. F. Raise all roof penetrations to a minimum 8" flashing height. The roofing contractor is responsible for connecting and disconnecting all associated equipment. Any roof curbs or duct work currently being supported by wood blocking shall be replaced with deck mounted steel curbs. All wood nailers that are visible from the inside of the facility must match the décor of the surrounding interior. G. Install fiber-glass reinforced SBS base sheet (80 mil) installed directly over recovery board inType III / IV hot asphalt with an asphalt coverage of 25 lbs. per 100 square feet. H. Install dual-fiberglass SBS mineral coated cap sheet installed over SBS base sheet in Type III / IV hot asphalt at a rate of 25 lbs. per 100 square feet. I. Any flashing that is terminated prior to passing over the top edge of the perimeter wall or penetration is to receive a termination bar, Structural Adhesive along the top edge and a surface-mounted counter-flashing detail per provided detail drawing. J. Install all new ANSI-SPRI ES1 (24 gauge) rated edge metal where applicable and counter-flashing over all termination bars. K. Three course all flashing vertical seams with Silver Mastic and Mesh per manufacturer's installation guidelines and coverage rates. L. If Option #2 is chosen, the entire roofing surface will be coated with an aluminum, non-fibered roof coating at a rate of 1 gal. per 100 square feet. Application calls for (2) .5 gal per 100 square feet coats. M. Power wash all construction debris and dripped asphalt off exterior walls and ground prior to leaving work site. N. Clean up all debris and damage done to grounds, building and roof top (if any). Plant new grass seed if necessary. Netting must be installed to hold the new grass seed and straw in place. Plywood should be laid under the dumpster and where any heavy machinery will be driven to prevent deep ruts from forming. O. All existing ladders, walkways, walls, etc.., must be protected so that these areas are not marked up from material spills or tracking of materials by walking. Contractor is responsible for properly protecting the parking lot, sidewalks, concrete, asphalt, etc.., from damage. Contractor to cover the areas with plywood or whatever material they deem necessary for proper protection. Any damage done to these areas will be repaired by the contractor using "like" material. P. The contractor is responsible for taking pictures of the interior and exterior of the building before work begins. This will help to determine who is responsible for any interior damage that may take place during the roofing work. Q. All insulation and roll goods must be covered with a tarp at all times. The factory plastic is not acceptable. Wet materials are considered damaged and will not be deemed unacceptable for installation. All rolls' goods must be standing up or should be thrown away. R. All contractors are responsible for roof cores, removing existing coping, metal wall panels, etc.., at time of the pre-bid review for verification of existing roof system and building structure and wall composition before proceeding with their project bid.
