Silicone Coating
Ralph McGill Boulevard
An occupied commercial building in Atlanta with a modified bitumen roof and 27 active leaks. Water was ponding at the drains, the cap sheet was losing granules, older repairs had used cement without reinforcement, and abandoned penetrations were letting water in.
Seal Top fixed the drainage and the details first, then restored the roof with a Gaco silicone coating system.
Scope of Work
Removed abandoned penetrations and closed the openings with flat stock
Reflashed two drains with new retrofit drains to stop the ponding leaks
Three-coursed the expansion joint, gravel stop and roof hatch, and sealed the counterflashing and reglet
Soft washed the roof surface
Applied a bleed-blocking base coat over the asphalt cap sheet
Reinforced every seam and lap with Gaco SF4200 SeamSeal
Finished with a white silicone top coat and added slip sheets under the antenna and pipe supports
Result: the repairs and the coating were completed in about a week in late December, with the building occupied the whole time.
Location
Atlanta, GA
Roof System
Silicone Coating
Completed
2025
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