Silicone Rescue of a 54-Year-Old Metal Roof in Santa Rosa CA
Wedge Roofing restored a corroded 26,000 sq ft metal roof on a 1960s Santa Rosa supply…
"Eureka."
California has more commercial roof area than any single market approach can generalize, from Inland Empire mega-warehouses to century-old urban industrial stock. Two forces push owners toward coating restoration here: Title 24 cool roof requirements, which reflective coatings satisfy on many projects, and the sheer cost and disruption of tear-off in a state with high labor and disposal costs.
Most of the commercial stock sits in a Mediterranean pattern: long, dry, sunny summers that pour UV onto rooftops, followed by concentrated winter rain, sometimes in atmospheric-river volumes that find every drainage flaw at once. The Central Valley adds sustained hundred-degree heat, while coastal zones trade heat for salt air and marine moisture. Freeze-thaw matters only in the mountains, but wildfire ember exposure has become a genuine design consideration in the urban-wildland interface. The combination of eight dry months and sudden heavy rain makes ponding failures unusually punishing.
The Inland Empire and Central Valley logistics corridors hold an enormous stock of TPO on tilt-up distribution buildings. Older Los Angeles and Bay Area industrial districts still run heavily to built-up and modified bitumen roofs, and metal buildings serve agriculture and food processing throughout the Valley.
Henry has deep California history and remains a staple in the state, alongside GAF and Gaco silicone systems. Sherwin-Williams Uniflex and APOC round out what distributors commonly stock, and manufacturers serving the state maintain low-VOC formulations to comply with SCAQMD and other district air rules.
Reflective acrylic is a natural fit for Title 24 compliance on roofs with positive drainage, especially in the hot interior. Silicone is the safer specification where winter ponding is documented, which is common on large flat logistics roofs. Verify the product's VOC compliance for the specific air district before committing to a system.
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