Cornerstone Bible Church, Glendora, Calif.
RETROFIT TEAM
ROOFING CONTRACTOR: Howard & Sons Inc.
ROOFING SUPPLIER: RoofLine Supply and Delivery
MATERIALS
When the church’s asbestos, diamond-shaped shingles began to fail, ATAS International’s CastleTop was chosen as a replacement. The shape of the .032 aluminum panels, which resembled the original shingles, was an important factor in the choice. Church representatives also appreciated the longevity and durability of a metal roof, along with the fire resistance of the panels, a concern in Southern California.
After the asbestos shingles were removed, the CastleTop metal panels were installed over a solid wood deck. CastleTop aluminum shingles are 15 3/4 by 15 3/4 inches in size and offer coverage of 13 1/2 by 13 1/2 inches. They have an embossed texture with a 70 percent PVDF paint coating. The shingles also are available in anodized aluminum, copper and zinc. A minimum roof slope of 3:12 is required for installation.
For the Cornerstone Bible Church, Rocky Grey and Charcoal Grey were used together to create a pattern on the roof and complement the church’s natural stone walls. Prior to the building’s opening in 1931, members of the church mined rock quarries in the mountains above the citrus farms of Glendora and brought down large stones, out of which they built the Cornerstone Bible Church.
The project earned third place in the 2019 ATAS Project of the Year competition in the Commercial Roofs category.
ALUMINUM ROOFING PANEL MANUFACTURER: ATAS International Inc.