Alcoa Maintenance Building

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Building Owner:Alcoa Mill Products
City / State:Lancaster, PA
Project Info:Remove old roof system, replace metal decking as needed and install new ISO and FiberTite XT Membrane.
Project Size:7,521 ft²
Roof System:FiberTite

Remove and dispose of the existing gravel surfaced built up roofing and insulation down to the existing metal deck. Remove and replace deteriorated metal roof decking. Mechanically fasten tapered polyisocyanurate board insulation over the entire roof area. Install a .036” reinforced, mechanically fastened Fibertite XT membrane roof system over the new insulation. Flash all curbs, walls and roof penetrations in accordance with the manufacturer’s recommendations. Custom fabricate and install new membrane clad edge metal. Custom fabricate and install new 24 gauge pre-finished galvanized counter flashings and conductor heads. Extend the existing guardrail system by 15’ at roof area 1. Modify the existing guardrail toe board as required to flash guardrail posts. Remove all abandoned curbs/pipes and patch existing metal roof deck. Provide a manufacturer’s 20 year total system warranty. At the sloped roof area, Mechanically fasten one layer of 2" polyisocyanurate board insulation over the entire roof area. Install a 036” reinforced, mechanically fastened Fibertite XT membrane roof system over the new insulation. Flash all curbs, walls and roof penetrations in accordance with the manufacturer’s recommendations. Custom fabricate and install new membrane clad edge metal. Custom fabricate and install new 24 gauge pre-finished galvanized wood fascia wrap on west side of building. Install pre-manufactured half round gutter and round downspouts on west side of building. Provide a manufacturer’s 20 year total system warranty.

These roof areas are located at the Medical building and the Facilities manager’s office which had a lot of pedestrian traffic going in and out of the building. In addition Alcoa will only allow CFE to use scaffolding as a means of fall protection on roof areas that have a slope greater that 3 inches in 12 inches. We used a subcontractor to erect the scaffolding that was used for fall protection and provide protection for the pedestrians that passed along the building.


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