New and Improved Coping System Achieves High FM Performance Rating

OMG Roofing Products introduces a new and improved PermaSnap Coping line. The redesigned PermaSnap and PermaSnap Plus coping products are ANSI/SPRI/FM4435/ES-1 tested and approved and feature a dual-hook profile for superb wind performance and a clean surface look, according to the manufacturer. PermaSnap products can be installed on parapet walls from 4 to 32 inches wide.

The three-piece PermaSnap System includes self-locating, pre-punched clips with pre-attached springs for high static engagement, concealed splice plates and a snap-on cover. Concealed splices are designed with internal drainage channels that direct water back onto the roof and eliminate the need for caulks or sealants. The snap-on cover accommodates building expansion and contraction to prevent oil-canning and does not require crimping or additional field fabrication. In addition, PermaSnap is available with a full assortment of matching corners, end-caps and other accessories for every roof configuration including radius curves.

“We are very pleased with the performance of the updated PermaSnap line,” said Patrick O’Connor, edge product manager at OMG Roofing. “PermaSnap has FM ratings of up to 1-105 for parapet walls up to 24-inches wide, and PermaSnap Plus has ratings to FM 1-120 for parapet walls up to 32-inches wide, making PermaSnap one of the highest rated coping systems on the market today.”

PermaSnap Coping is available in a wide range of Kynar500 colors and finishes, and comes with a standard 20-year Excel Warranty for wind speeds up to 110 mph. The heavier duty PermaSnap Plus comes with a 25-year, 155 mph, Category 5 wind warranty.

For more information, www.OMGEdgeSystems.com or www.OMGRoofing.com.

Project Profiles: Retail

Sierra Nevada Brewery, Mills River, N.C.

About 58,000 pounds of copper were installed on the brewery.

About 58,000 pounds of copper were installed on the brewery.

TEAM

Roofing Contractor: The Century Slate Roofing Co., Durham, N.C.
Architect: Matthew Galloway of Russell Gallaway Associates Inc., Chico, Calif.

ROOF MATERIALS

Approximately 423 squares of 1/2-inch-thick, 18-inch-tall by random width Unfading Green Slates were installed by hand on the project. This was close to 750,000 pounds of slate, or 375 tons.

About 3,000 feet of custom copper gutters and downspouts, conductor heads and 100 squares of painted standing-seam panels were fabricated, and pre-built copper clad dormers and decorative copper cornices were installed.

The project also included 35 squares of copper standing-seam roofing, 25 squares of soldered copper flat-seam roofing and 115 squares of copper wall cladding. About 58,000 pounds of copper were installed on the brewery.

Everything on the building is oversized and that meant everything had to be built to support the heavy structural loads and live loads from wind and mountain snow. The large roof faces called for 10-inch custom copper gutters. When you have gutters that large in the mountains of North Carolina you have to consider the extraordinary weight of the annual snow.

In addition to snow guards being installed on the slate roof, custom 1/4-inch-thick copper gutter brackets fastened the gutter to the fascia. It is typical on steel-framed construction, particularly on this scale, that the framing is out of square and there is widely varying fascia and rake dimensions.

Approximately 423 squares of 1/2-inch-thick, 18-inch-tall by random width Unfading Green Slates were installed by hand on the project.

Approximately 423 squares of 1/2-inch-thick, 18-inch-tall by random width Unfading Green Slates were installed by hand on the project.

However, these items should not appear out of square or have varying dimensions. Great care had to be taken to measure and custom bend onsite all the detail flashings so everything appeared perfect. This took many skilled craftsmen, a great deal of time and the absolute drive to provide the highest quality work.

Slate Manufacturer: Evergreen Slate Co. Inc.
Copper Fabricator: K&M Sheet Metal LLC
Supplier of Underlayment, Copper Sheets and Coil, Insulation and Nailbase Sheathing: ABC Supply Co. Inc.

ROOF REPORT

The new-construction project began in November 2013 and was completed in September 2015.
The team completed the slate installation so well that The Century Slate Co. was awarded the 2015 Excellence in Craftsmanship Award by Evergreen Slate for the project.

PHOTOS: The Century Slate Roofing Co.

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