Complete removal of all existing gravel surfaced built-up roofing, insulation, flashings, metal flashings, gutters and downspouts; and the installation of new insulation, cover board, 60 mil TPO membrane roofing, flashings, metal flashings, gutters, downspouts and associated miscellaneous work.
Remove and dispose of the existing roof system including flashings and sheet metal down to the existing poured gypsum deck. Provide base sheet mechanically attached to roof deck. Provide vapor retarder. Provide roof insulation system. Provide a cold adhesive applied two-ply modified bitumen roof membrane along with flashings and accessories. Replace sheet metal flashings and trim. Provide a complete, weathertight, 20-year warrantable roof assembly with 30-year finish warranty.
The existing roof area consist of a concrete deck, hot mopped asphalt base layer, a layer of tapered isocyanurate insulation, a one and three-quarter inch layer of perlite insulation, and a 2-ply modified bitumen roof membrane. The existing roof systems shall be removed to the deck. The deck shall be cleaned and prepared for reinstallation of roofing materials. Install a one and one-half inch base layer of isocyanurate insulation set in foam insulation adhesive. Adhere a new base layer to the existing concrete deck in foam insulation adhesive as required to meet 90psf uplift per FM Global. Install an additional layer of one-eigth inch per foot tapered isocyanurate insulation set in foam insulation adhesive. Install new silicon impregnated fiberglass reinforced cover board in foam insulation adhesive. Fully adhere new PVC membrane and flashings as specified herein and as shown in the project drawings as required by the manufacturer for a twenty-year (20) NDL Manufacturer’s Warranty. The new roof system shall be able to resist the win uplift loading.
The project consists of a roof replacement at Police and Fire Training Academy, in Charlotte, North Carolina. This work includes labor, materials, equipment, supervision, and administration to replace the existing two-ply modified bitumen roof system with the specified thermoplastic, single-ply roof system on 4 roof areas totaling approximately 59,115 square feet of roof area.
Project consists of roof replacement of Fire Station 33 in Charlotte, NC. This work includes the provision of labor, material, equipment, supervision, an administration.
Replace the existing built-up asphalt roof system with the specified two-ply modified bitumen roof system on 2 roof areas totaling approximately 9,700 square feet of roof area.
This contract will be to provide roof and sealant replacement on the building at
4824 West Boulevard for Charlotte Douglas International Airport, Charlotte, North Carolina. This will be a complete removal of existing roofing membrane, insulation, flashings, sheet metal flashings, gutters, and downspouts, and complete removal of all existing backer rod and sealant at exterior wall brick control joints; repair and/or replacement of rusted and/or deteriorated metal deck, and the installation of new insulation, cover board, mechanically fastened 60 mil TPO membrane and associated flashings, sheet metal flashings, gutters and downspouts, and backer rod and sealant at exterior wall brick control joints and all associated miscellaneous work. The contractor must also provide temporary protection of contents in the building and cleanup of debris associated with removals. The roof has exceeded the expected lifespan and is currently 30+ years old. The project term will be 180 days.
- WORK COVERED BY CONTRACT DOCUMENTS
- Project Identification: The project consists of roof recover at the Charlotte Area Transit System (CATS) Light Rail Administration Facility, 3200 South Boulevard, Charlotte, North Carolina.
- Project Access: Access to the facility is at 3305 Pelton Street, Charlotte, North Carolina located at the rear of the facility.
- Base Bid: Work is generally as follows:
- Removal of lightning protection system and storage for reuse.
- Removal and disposal of all existing single-ply membrane and flashings; metal flashings, scupper liners and coping caps; installation of new polyisocyanurate roof insulation, gypsum cover board and overlay, fleeceback Polyvinyl-Chloride (PVC) roof membrane and flashings, wood blocking, metal flashings, coping caps, PVC scupper liners and all associated miscellaneous work as specified herein.
- Complete removal of existing brick along wall above roof level at Area D; and installation of new through-wall flashing and brick replacement consisting of use of salvaged brick if in good condition and providing new brick (to match existing) as required.
- Reinstallation of lightning protection system upon completion of the roofing work according to specifications and requirements of the original UL master label installation.
The existing roof systems from top to bottom are as follows:
Components Areas A, B, C and D Membrane Fully adhered Hypalon-based single-ply membrane Cover Board 1/2 inch gypsum fiber roof board Insulation Two (2) layers of 2-inch extruded polystyrene (XPS) Underlayment 5/8 inch gypsum fiber roof board Deck Metal deck except that parts of Area A has acoustical metal deck Drainage Internal roof drains with overflow scuppers Slope 1/4 inch per foot structural slope with XPS insulation drainage crickets
Approx. heights of roofs to top of parapets above grade is 50 feet.
Approx.. square footage of roof project is 18,313 sq.ft.
Roofing Replacement of various Wastewater Treatment Plants’ structures: McDowell, Irwin, Sugar Creek and McAlpine. Replacement consists of complete tear off of existing roof down to substrate. Minor mechanical and electrical relocation/replacement work will be performed, if necessary.
Roofing Replacement of various Water Treatment Plants and Lift Stations. The Project consists of replacing roofing systems at Sharon Repump Station, Hoskins Booster Pump Station, and Plaza Booster Pump Station, as well as removing existing skylight and install clerestory and roof structure at Plaza Booster Pump Station and replacing the skylight at Idlewild Booster Pump Station. complete tear-off of the existing roof down to the substrate. Minor mechanical and electrical relocations and re-hook-ups are required.