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Bradford County Courthouse, Towanda, Pa.

A terra cotta tile roof was replaced with copper on Bradford County Courthouse. It was built in the 1800s, and Charles F. Evans Co. Inc. completed a two-phase project to re-roof its dome and lower, main roof.

The first phase, from April 2016 to April 2017, included removing terra cotta tiles from the dome and installing copper roofing. During the second phase, from April 2017 to January 2018, corrugated copper panels were replaced with batten seam copper panels on the main roof.

The crew throughout the project varied from six to eight workers from International Association of Sheet Metal, Air, Rail and Transportation labor union Local 112 and Local 44.

The terra cotta tiles on the dome were hung with wire on structural steel purlins. The copper tiles on the main roof were attached with small nails into fiberboard.

On the dome, Charles F. Evans fabricated and fastened 3,300 square feet of Revere Copper Products Inc.’s flat seam, 20-ounce, cold-rolled copper panels. As workers reached the apex of the dome, the panels were soldered, due to its 4:12 slope.

On the main roof, Charles F. Evans fabricated and installed 12,000 square feet of Revere Copper Products’ batten seam copper panels. All the panels were shop-fabricated and delivered to the job site as needed. Flashings, gutters and downspouts were fabricated with 24-ounce copper.

To complete the main roof, workers removed 12-inch corrugated copper panels and cleaned the steel deck. Then, they installed GCP Applied Technologies Inc.’s self-adhered Grace Ice and Water Shield HT and 2-inch by 4-inch wood sub-framing. Next, two layers of Hunter Panels LLC’s 1 1/2-inch-thick, extruded polystyrene H-Shield insulation, 5/8-inch-thick plywood sheathing and a layer of W.R. Meadows Inc.’s 30# Felt were installed. The raised batten seam copper panels were attached next, followed by Alpine SnowGuards’ snow retention system.

The project also included repairing a copper statue of Columbia, or Lady Justice, on the dome peak. Charles F. Evans rehabbed, re-soldered and cleaned the ornamental metal.

Bill Burge, project manager at Charles F. Evans, says access on the dome was challenging. “We had scaffolding around eave areas, guardrails along the rake edges and anchor points in structural steel for tie-offs. We used ladders and planks to work installation to the top.”