Renovation of an educational facility in Cullowhee, North Carolina. Completed plans call for the renovation of a educational facility.

The project includes the replacement of the existing low-sloped EPDM roof system with a new thermoplastic membrane system, installation of a new standing seam metal roofing system, and associated work. Bids will be received for a Single Prime Contract. All proposals shall be lump sum. The meeting will address the project scope and description and answer specific questions and issues, anticipated project schedule, bidding procedures, and bid forms. Participants will also be able to visit the building site and roof following the administrative portion of the meeting. Interested subcontractors and manufacturer representatives are strongly encouraged to attend. All contractors are hereby notified that they must have proper license as required under the state laws governing their respective trades. Each proposal shall be accompanied by a cash deposit or a certified check drawn on some bank or trust company, insured by the Federal Deposit Insurance Corporation, of an amount equal to not less than five percent (5%) of the proposal, or in lieu thereof a bidder may offer a bid bond of five percent (5%) of the bid executed by a surety company licensed under the laws of North Carolina to execute the contract in accordance with the bid bond. Said deposit shall be retained by the owner as liquidated damages in event of failure of the successful bidder to execute the contract within ten days after the award or to give satisfactory surety as required by law. The owner reserves the right to reject any or all bids and to waive informalities. A. Furnish labor, equipment, materials, services, and supervision necessary to complete the work outlined in these technical specifications and drawings for roof replacement and associated work at the Reid Building at the campus of Western Carolina University in Cullowhee, North Carolina. B. The following is a summary of roof replacement work items included. This summary is not intended to be an all-inclusive scope of work. Refer to individual specification sections and drawings for more specific project requirements. 1. Perform a Pre-Job Damage Survey prior to the start of work. The purpose of the survey is to document existing conditions and identify existing damages/distresses. Survey must include roof-top components, building exterior, site features (pavements, walkways, landscaping, etc.), building interior, applicable equipment, and other applicable components. A pre-job damage survey is considered to be a protection for the contractor and documentation will be used to assist the Owner, Designer and Contractor in determining whether damages noted during construction were caused by construction activities or were existing. 2. Clean and test roof drains and drainage lines to their outlet from the building and water test underground drain lines from existing boot at grade. Remove readily accessible debris from the drain strainer, bowl, and initial section of vertical drain leader (up to 2'). Water test the drains to confirm that the existing assembly allows the free flow of water without visible leaks/water entry to the interior prior to the start of construction. Testing must be completed prior to the demolition of the existing roof system. Notify the Designer and Owner if water testing indicates suspected or confirmed clogged or damaged drain/drain leader/or underground drain line components. During this testing, inspect existing drain components for damage or conditions that may prevent installation of the specified retrofit drain assembly. 3. The roof consists of a total of 20 identified roof areas. (Refer to Section 012300 for information of roof areas included in Bid Alternate scope of work). Areas are separated by expansion joints, area dividers, or a change in system type/slope, etc. a. Area A1: The existing roof system generally consists of an EPDM roof membrane over polyisocyanurate insulation over a bituminous vapor barrier/base sheet, and a cementitious wood fiber roof deck on bulb tees, supported by steel purlins, and steel trusses. Area A1 has a 1-1/2:12 slope in the deck. Total depth of existing system is approximately 2" (field verify). b. Area C1: The existing roof system generally consists of an EPDM roof membrane over tapered polyisocyanurate insulation over a bituminous vapor barrier/base sheet, and a sloped cementitious wood fiber roof deck. Area C1 has a 1/4:12 slope in the deck. c. Areas C2, C3, C4, C5, C6, C7, and C9: The existing roof systems generally consist of an EPDM roof membrane over tapered polyisocyanurate insulation over a bituminous vapor barrier/base sheet, and a cementitious wood fiber roof deck. Portions of Area C2, C3, and C9 contain gypsum board and various depths of thermosetting insulation fill (3" - 5" in thickness). Portions of C9 contain wood fiber board as infill for varying roof deck transitions (1/2" - 3" in thickness). Roof Area C3 has various roof decks including cementitious wood fiber, tongue and groove wood plank, metal, and concrete plank. Total depths of existing systems are approximately anywhere from 3-1/2" - 11" (field verify). d. Area C8: The existing roof system generally consists of asphaltic shingles over underlayment on wood decking supported by wood structure with batt insulation in between wood rafters, and a gypsum ceiling. Area C8 has a 7:12 slope in the deck. e. Areas D1, D2, and D3: The existing roof system consists of an EPDM roof membrane over wood fiber board, polyisocyanurate insulation, a bituminous vapor barrier, and a sloped cementitious wood fiber deck (3:12). The flat sections of these areas contain varying depths of thermosetting insulation fill (1" - 5" in thickness) and gypsum board. Total depth of existing system on the sloped deck is approximately 2- 1/2" (field verify). f. Area E4: The existing roof system consists of an EPDM roof membrane over polyisocyanurate insulation, a bituminous vapor barrier, gypsum board thermal barrier, and a metal deck. Total depth of existing system is approximately 3" (field verify). 4. Remove all existing roof membrane, insulation, vapor barrier/base sheet, and flashings from Roof Areas A1, C1-C5, D1-D3, and E4 down to the top of the roof deck and legally dispose of off-site. Do not remove more of the existing roof system than can be returned to a watertight condition prior to the end of the workday. 5. At Roof Area C8, remove existing shingles, underlayment, decking, batt insulation, perimeter flashings, and other isolated trim as needed down to existing wood structure and gypsum ceiling and legally dispose of off-site. Do not remove more of the existing roof than can be returned to a watertight condition prior to the end of the workday. Do not damage existing gypsum ceiling. 6. Remove existing sheet metal flashings, counterflashings, gutters, receivers, expansion joint caps, partial perimeter blocking, and other existing flashing accessories and dispose of off-site as necessary to allow for the proper installation of the new roof system assembly and details. Components shall remain if they are noted to be incorporated into the new roof system/detail. Protect components that will remain for reuse, including, but not limited to, penetrations, curbed equipment, portions of wood blocking, skylights, drain bowls, etc. 7. Inspect the existing roof decks, wood blocking, drain bowls, and other components noted to remain and make repairs, or replace, damaged or deteriorated materials in accordance with applicable sections of these specifications. Reuse existing wood blocking only where shown on the design details or specifically approved on-site by the Designer. Otherwise install new materials. Methods of repair for the cementitious wood fiber, concrete, metal, and wood roof decks will vary dependent upon severity of damage. Refer to base bid allowances (estimated quantities of work in Section 012100) for additional information. 8. At Area A1, cut the existing roof deck to allow for installation of new fall protection anchors, secured to the existing steel roof framing as shown in the project drawings and details. Anchor installation should be coordinated with demolition and roof system installation to ensure that a watertight condition at new penetrations is maintained. Horizontal lifeline and other fall protection components installation must be performed after installation of the new roof system is complete. 9. Remove roof penetrations that are identified on the drawings as "abandoned" or "for removal". Make required repairs to the roof decks. Repairs will vary based on the size of the penetration removed. 10. Inspect existing securement of wood blocking that will remain in use. Install supplemental fastening of existing blocking where noted on the drawings to ensure adequate wind uplift pressure resistance. Install new wood blocking where shown on the drawings to form the roof perimeter, raise existing curbs to accommodate the new thickness of the roof system, and to provide securement points for membrane transitions. 11. Roof Area A1: Install new structural framing, insulation, new plywood roof deck, and standing seam metal roof system and roof accessories as shown in the design drawings. 12. Roof Area C8: Repair wood rafters where damaged or deteriorated. Install new batt insulation, new roof deck, and standing seam metal roof system and roof accessories as shown in the design drawings. 13. Roof Areas C1-C5, D1-D3, and E4: Install the new low-sloped roofing system and roof accessories as shown in the design drawings. Do not install the thermal barrier over the section of Roof Area C3 with a concrete deck. Fastener pull-out testing must be performed on cementitious wood fiber deck, metal deck, and tongue and groove wood plank deck. 14. The installed vapor barrier may be used as a temporary roof system until installation of the completed new roof system. The Contractor may not have an exposed vapor barrier/temporary membrane on areas larger than one area (area sizes/layout are as defined by the over project drawings). The Contractor remains responsible for adequate temporary drainage and overall watertightness of the temporary roof membrane until installation of the completed new system occurs. Drain clamping rings and strainers must be reinstalled as a part of the temporary roof system to promote watertight temporary detailing at internal drains. Temporary retrofit roof drains may also be utilized as an alternate method.