Roof Replacements for Garber Public Schools

The following is a summary of the scope of work required for the roofing project. This summary is listed to state the basic requirements for the roofing system to be bid. 1. Clean and repair existing R-panel roofing prior to placing new membrane. Fill prepped area with new insulation and provide new membrane over insulation, mechanically attached. 2. Provide all factory manufactured flashing & appurtenances, parapet wall treatments, and carpentry and materials required. 3. Add flashing, gutters and downspouts as shown on plan, or as required to provide positive drainage off the roof. Provide new slope in existing roof with tapered insulation to slope to gutters as required. Clean, maintain and repair existing roof gutters and downspouts. Resecure loose support straps. Remove all debris from roof. 4. Disconnect, move and reinstall mechanical equipment and utility service lines on raised support system as necessary. Install new curbs at mechanical equipment. Equipment shall be 8" to 12" minimum above finished roof, unless approved otherwise by the manufacturer and Architect. 5. Strictly adhere to manufacturer's recommended installation methods and instructions. 6. The existing roof has slope built into the structure. Verify existing conditions affecting roof slope and drainage and make modifications necessary to provide positive drainage (1/8" per foot) off structure by building up slope with insulation as required. All water shall have a direct path to roof drains, roof edges, scuppers or gutters. Ponding of water will not be accepted. Ponding water must be acceptable under manufacturer's warranty, and cannot be an exclusion to the warranty. Contractor shall conduct flood test of roof upon completion of work for Architect's inspection/approval. 7. Replace existing galvanized metal caps, gravel stops, scuppers, fascias and metal flashings with new material, at same locations and at same height elevations as required. Reuse existing material where practical, and only where approved by Architect. Provide new material to match existing as required. Match new work to existing. Paint to match existing. 8. Provide new flashings, pitch pans, roof accessories, etc. Dispose of old materials and debris at legal dump site. Installation of new board and membrane shall provide a UL 90 wind rating. Fasteners shall penetrate thru existing roofing membranes and thru existing deck. Fasteners shall be in accordance with manufacturer's requirements to meet UL 90 wind rating. 9. Clean and repair existing roof prior to placing new membrane. New roofing membrane and system shall be applied over cleaned exposed (existing) surfaces. Provide new flashings, pitch pans, roof accessories, etc. Dispose of old materials and debris at legal dump site. 10. Remove loose, deteriorated coatings and mastics from inside face of perimeter walls and parapets. All inside parapet walls shall be covered with new roof membrane system per manufacturer's written instructions and specifications. 11. Recaulk all deteriorated coping stone joints prior to covering with new material. 12. Remove old deteriorated caulking. Recaulk with Reglet Joint Sealant. 13. Provide and install new walkway pads on roof from ladder access area to, between and around all mechanical and electrical equipment. Install per manufacturer's installation instructions, solidly secured to roof. Mark ladder access points on top of wall. 14. Strictly adhere to manufacturer's recommended installation methods and instructions. 15. Install new single ply thermoplastic membrane roof system and appurtenances as specified and/or required. Install new manufactured flashings. 16. Wrap all existing ductwork and metal work exposed on roof where exposed, with new thermoplastic system. 17. Rescrew, seal, cover, wrap, and do all items necessary to completely seal all roof top mounted mechanical units and items of equipment. Replace all damaged items with new items. All equipment shall be covered by 2 year Contractor's warranty to be leak free during warranty period. 18. Reconnect all deteriorated or broken electrical conduit. Repair/replace all loose and/or damaged connections. 19. Provide new expansion joints at the same locations as the existing expansion joints. 20. Existing improvements on the roofs shall remain in tact. Protect from damage. 21. All items which penetrate the roof and do not have an 8" roof curb height (minimum) shall be reconstructed as required to provide a new 8" to 12" minimum roof curb. Items which are impossible to raise require a variance from the Architect and Manufacturer. 22. Delete all wood supports at gas pipe and conduit supports. Provide new lexan (polycarbonate) roof pipe stands as manufactured by Miro Industries, 800 768- 6978, or approved equal, in lieu of redwood supports, size and type as recommended by manufacturer. Secure supports to roof to prevent removal or blowing off roof.

Division 03 -

Concrete, Cast-in-Place Concrete.