Roofing on the bay

TRM Enterprises helps build a residential retreat on Shelter Island

  • TRM Enterprises craftsmen soldered copper sheet panels on low-slope roof areas.
  • Western Red Cedar and copper were chosen for the materials’ ability to blend with the landscape over time.
  • Twenty-ounce locked-seam copper panels were installed on four bay windows.
  • Workers used 20-ounce flat-seam copper wall panels to create exterior wall coverings.
  • TRM Enterprises craftsmen also custom-created and installed copper built-in gutters, downspouts and roof edge fascia trim elements.

Located on New York’s Shelter Island is a Manhattan chef’s weekend home designed for hosting gatherings of friends and family. Situated in a forest near a protected tidal lagoon, the home includes all the amenities to prepare gourmet meals and accommodate overnight guests who want to escape busy New York City.

Designed by architectural firm Bohlin Cywinski Jackson, New York, the house is oriented to take advantage of panoramic views of Peconic Bay. The house’s roof curves as it nears the waterfront, offering views from inland to the bay. The builder, Artisan Construction Associates, Water Mill, N.Y., contacted TRM Enterprises, Bridgehampton, N.Y., for help installing the new home’s roof system and copper cladding.


The residence is arranged on two levels. A main level serves as the home’s shared space and includes an open kitchen, a dining room and a living room with sliding glass walls that open to a concrete pavilion with a fireplace and outdoor kitchen.

Intersecting at the lower level is a double-height entryway that leads from the front door through the house to the water’s edge. A wooden staircase leads from the entry hall to the upper level’s guest rooms, den and a master suite.

Western Red Cedar and copper were chosen for the home’s exterior to distinguish between architectural design elements and the materials’ ability to weather and patina over time, further blending into the landscape.


In July 2016, TRM Enterprises began work on the rural residence. A copper roof system initially was removed from the home’s design for budgeting reasons and switched to single-ply membrane.

“But once the house was framed, the owners decided to reverse that decision and went back to the original design as they realized how visible the roof is from the second floor,” says Guillaume Le Guen, project manager for TRM Enterprises. “The copper roof and siding create a frame to view the Peconic Bay.”

After materials were transported to the job site via ferry, TRM Enterprises workers applied GRACE ULTRA™ self-adhering underlayment to the 3/4-inch-thick plywood roof decks.

On the 1,700-square-foot low-slope roof areas, TRM Enterprises craftsmen then soldered 18- by 24-inch, 20-ounce Revere copper sheet panels arranged in a running bond pattern. On the 1,000-square-foot steep-slope roof areas, workers installed 20-ounce copper locked-seam panels in the same pattern.

To create exterior wall coverings, workers applied GRACE ULTRA self-adhering underlayment to 3/4-inch-thick plywood wall sheathing and installed 900 square feet of 20-ounce flat-seam copper wall panels.

On four angled bay windows, TRM craftsmen applied GRACE ULTRA self-adhering underlayment over plywood decks and then installed 300 square feet of 20-ounce locked-seam copper panels.

TRM Enterprises craftsmen also custom-created and installed all copper built-in gutters, downspouts and roof edge fascia trim elements.

No place like home

Three months later in October 2016, the TRM Enterprises team completed its work on the Shelter Island residence.

“The most rewarding part of the project was working as a team with the owner, architect and builder,” Le Guen says. “The home was designed exceptionally well, and it was a pleasure to work with everyone on this project.”

For demonstrating exceptional workmanship on the Shelter Island residential project, TRM Enterprises received a 2019 American Copper in Architecture Award from the Copper Development Association.

Chrystine Elle Hanus is Professional Roofing's associate editor and NRCA's director of communications.

Project name: Private residence
Project location: Shelter Island, N.Y.
Project duration: July-October 2016
Roof system type: Copper
Roofing contractor: TRM Enterprises, Bridgehampton, N.Y.
Roofing manufacturers: GCP Applied Technologies Inc., Cambridge, Mass.; Revere Copper Products, Rome, N.Y.


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