San Francisco Epoxy Floors Co.
(415) 801-3047Free quotes for commercial epoxy flooring in San Francisco, CA.
Commercial Epoxy Flooring in San Francisco, CA
Commercial epoxy flooring is a resin system, from a thin roll coat to a quarter-inch mortar, chosen for the wheels, chemicals, water and static a business floor has to take, and in San Francisco the slab's moisture and the Bay Area Air District's limits on volatile organic compounds (VOC) narrow the choice. The City's zoning shows the load: Planning Code section 210.3 says businesses in its PDR districts, for production, distribution and repair, generally share a need for "floors capable of bearing heavy loads," and the Office of Community Investment and Infrastructure (OCII) plans "4.4 million sq. ft. of commercial space for office/lab uses" at Mission Bay. The Air District caps an industrial maintenance coating at 250 grams per liter, where the federal rule allows 450 g/L.
From $12 a sq ft for 100% solids commercial and industrial coatings, national (HomeAdvisor, Jun 2026) · full pricing guide
Published prices for commercial floors are thin. HomeAdvisor's national cost page from June 2026 says commercial and industrial jobs "require a 100% solid coating, which means the price will be higher, at $12 or more per square foot," and that coatings built for heavy vehicles "add 20% to 30% to your total cost." Angi (August 2026) names resin type, floor size and "surface preparation requirements" as the main drivers, and HomeAdvisor floor size and resin type. No survey this site uses prices a San Francisco job, or gives novolac, static-control or urethane cement floors a line of their own. O*NET's tables, built on 2025 Bureau of Labor Statistics wages, show the local gap: floor layers (except carpet, wood and hard tiles) earn a median $36.04 an hour in the San Francisco-Oakland-Fremont metro against $27.15 nationally, wages paid to workers rather than prices. The floor cost page has the national rows.
A resin floor is specified by chemistry and film build, in mils (thousandths of an inch). Sherwin-Williams says most contractor-installed systems go down at 20 to 250 mils, and that thickness, chemical resistance and life expectancy rise "from coatings, to slurries, to broadcast systems, to trowel applied floors, to epoxy terrazzo"; a broadcast system has sand, quartz or flake thrown into wet resin. Sika's Sikafloor-264 sheet (September 2026) shows the ladder in one product: a 6 to 10 mil prime coat, a 12 to 15 mil wear coat, or a slurry at 60, 80 or 120 mils. Novolac epoxy is the chemical-resistant step, owing to what Sherwin-Williams calls its "high degree of cross-linking." MMA, methyl methacrylate, is the fast one: Dur-A-Flex says its Cryl-A-Flex line reaches "full cure and chemical resistance in one hour," and Sherwin-Williams notes its "strong odor" and high relative cost.
The slab decides whether any system holds. Sherwin-Williams' Form G-1 (revised 02/26) caps moisture two ways: a calcium chloride dome under ASTM F1869 may show "not more than 3 pounds of moisture per 1,000 square feet per 24 hours," and probes set in the slab under ASTM F2170 may read no higher than 80% relative humidity. Surface profile, the roughness ground or blasted in so resin can grip, is rated on the ICRI 310.2R scale; Wolverine Coatings wants it rougher under a thicker floor: CSP 3 to 5 beneath a 10 to 40 mil coating, CSP 5 to 9 beneath a build of 1/8 inch to 1 inch. Sherwin-Williams has moving joints saw-cut back through the new floor. For indoor grinding, Table 1 of Cal/OSHA's silica rule (Title 8 section 1532.3) has the walk-behind grinder run wet, or with the maker's recommended dust collector and a filter of 99% or greater efficiency, with loose dust HEPA-vacuumed between passes. Along the bay line the City's plan for Bayview-Hunters Point records "Extensive landfill," so check bayside slabs for cracks too.
Cure times are printed at stated temperatures, and San Francisco's air runs cool. Sikafloor-264 takes foot traffic after about 24 hours at 50 degrees F, 12 hours at 68 degrees F or 8 hours at 86 degrees F, with full cure in about 10, 7 or 4 days. Sika also wants the slab's temperature to beat the dew point, the point at which vapor condenses into water on a surface, by at least 5 degrees F. Westcoat allows wheel traffic on its EC-36 after 72 hours at 72 degrees F. The Downtown San Francisco station's 1991-2020 normals from NOAA put the annual normal daily maximum at 64.1 degrees F and the minimum at 51.3 degrees F, outdoor air readings rather than slab temperatures, so the installer measures the room. Before work starts, clear racks and stock and book a shutdown that covers the longest time on the sheet.
For the quote visit, have the floor area, the chemicals and cleaners it meets, the wheel types and loads, and your shutdown window ready. The written quote should list every product with its thickness, the VOC content of each in grams per liter, the moisture test with its result, and the cure and traffic times. California requires a contractor license once a job's labor and materials reach $1,000, or at any size when the work needs a permit or hired workers, as CSLB's December 31, 2024 bulletin explains, and Business and Professions Code section 7030.5 puts the license number on every construction contract. A request from this site reaches an independent local installer who holds a California contractor license. That installer, not this site, writes the quote and the contract. Check the license and its classification on CSLB's site before you sign; the San Francisco hiring guide covers the rest.
Free quote
Signs a Floor Needs a Commercial Resin System
A business floor needs more than a thin coat when it carries one of the loads below. Each shows in the room or its work and ties to a data sheet or rule here, and one is reason enough to ask the installer for a matched system.
- Steel-wheeled carts, pallet jacks or lift trucks cross the floor, which Sherwin-Williams says changes the aggregate, chemistry and application method a system needs.
- Acids, caustics or solvents reach the concrete, the exposure the Air District lists when it defines an industrial maintenance coating in section 8-3-226.
- The floor is hosed down or wet in use, so federal OSHA's 29 CFR 1910.22(a)(2) asks for maintained drainage and, where feasible, dry standing places.
- Instruments, electronics or lab work in the room are sensitive to electrostatic discharge (ESD), which calls for a floor tested against the ESD Association's two limits.
- Permanent aisles run between racks or machines, and federal OSHA's 29 CFR 1910.176(a) says they "shall be appropriately marked."
- Joint edges are chipping under wheels, the spalling NRMCA's CIP 6 warns of in heavy-traffic industrial floors, where it says joints should be filled to support their edges.
Regulation 8, Rule 3 and the 250 g/L Industrial Maintenance Limit
The Bay Area Air District allows an industrial maintenance coating 250 grams of VOC per liter, against 100 g/L for a floor coating, so the category a product is sold under matters on a commercial job. Regulation 8, Rule 3, in the July 1, 2009 text whose Table 2 took effect on January 1, 2011, defines an industrial maintenance coating in section 8-3-226 as "a high performance architectural coating" for substrates, "including floors," exposed to at least one extreme condition: immersion in water, wastewater or chemical solutions; "acute or chronic exposure to corrosive, caustic, or acidic agents"; frequent temperatures above 250 degrees F; frequent heavy abrasion or scrubbing with industrial solvents; or exterior exposure of metal structures. Where a coating is recommended for more than one specialty category, section 8-3-302.2 says "the most restrictive limit shall apply," subject to its exceptions.
The federal rule, 40 CFR Part 59 Subpart D, allows 400 g/L for floor coatings and 450 g/L for industrial maintenance coatings, so a product sold across the country can sit over the Bay Area line. Some resin floor products sit far under both: Westcoat prints 0 gm/l for its EC-36 epoxy at 100% solids, and Dur-A-Flex calls its MMA line "VOC compliant (<100 g/L)." Ask for each product's VOC figure and label category; the San Francisco floor numbers page sets the limits side by side.
Static Control Floors: The ESD Association's Two Limits
A static-control floor passes or fails on two measured limits, not on a product name. The EOS/ESD Association, the standards body for static control, sets its program standard as ANSI/ESD S20.20-2021. Where a floor works together with static-control footwear, it says the resistance to ground through "the person, footwear and floor" must stay under a billion ohms (written 1.0 x 10^9), and the body voltage in a walking test under ANSI/ESD STM97.2 must stay below 100 volts: "Please note that both limits must be met." The floor material itself is tested by ANSI/ESD STM7.1.
Dur-A-Flex's Dur-A-Gard ESD sheet (6/18/2013) describes "a 2-component, pigmented 100% solids static dissipative coating" with a 16 mil cured film, a surface resistivity of 10 to the 6th to 10 to the 9th ohms per square by ASTM D-257, and an average of 14v body voltage "when utilizing dissipative footwear." Stonhard's April 2025 article runs ESD products from a 5 to 7 mil coating to a troweled 1/4 inch mortar. Both limits include the person and the shoes, so the tenant's ESD program sets the target. The rooms are here: OCII counted "More than 1.9 million square feet of commercial, office, clinical and biotechnology lab space" built at Mission Bay as of January 2017, and the City of South San Francisco's April 2024 brochure counts "12 million square feet of biotech space."
Aisle Marking, Wet Floors and Slip Test Values at Work
The floor and aisle duties below are federal OSHA's; flooring standards and makers supply the slip numbers. Under 29 CFR 1910.22(a)(2), "The floor of each workroom is maintained in a clean and, to the extent feasible, in a dry condition," and where wet processes are used, drainage is maintained and, where feasible, dry standing places such as mats are provided. Under 29 CFR 1910.176(a), permanent aisles "shall be appropriately marked." OSHA's May 15, 1972 interpretation letter lets the lines be any color that clearly defines the aisle, says "any width 2 inches or more is considered acceptable," and recommends aisles "at least 3 feet wider than the largest equipment to be utilized, or a minimum of 4 feet"; the safety color code in 29 CFR 1910.144(a)(3) assigns yellow to caution and trip hazards. This page's sources hold no Cal/OSHA floor or aisle text; ask Cal/OSHA for it.
For slip, the Tile Council of North America explains that ANSI A326.3, revised in 2021, sorts hard floors into five use categories. Its "Interior, Wet" category needs 0.42 or more on a wet test of dynamic coefficient of friction (DCOF), or a value the manufacturer declares, and "Oils/Greases" is left wholly to the manufacturer. Sherwin-Williams publishes a wet DCOF above 0.42 for its Resuflor Deco Flake II system, and its submittal adds aluminum oxide #54 to #36 to the grout coat "For anti-slip properties." TCNA adds that DCOF "does not predict the likelihood a person will or will not slip-on a given surface."
Choosing the System by What the Floor Has to Take
The choice here is the class of system, and each step up adds thickness, cost and installation time in Sherwin-Williams' ranking. Choose by each zone's hardest exposure, and ask for a product and thickness per zone where uses mix. A dry floor that needs no coating can instead be ground and densified as polished concrete.
Thin-film epoxy roll coat
What it is: one or two roller coats, like Sikafloor-264's 6 to 10 mil prime coat and 12 to 15 mil wear coat. What the data says: Sherwin-Williams gives a coating "the lowest cost and fastest installation but with the shortest expected useful life," and warns that "coatings do not hide imperfections in the substrate." Who it suits: dry storage, corridors and back rooms with foot traffic and rubber wheels.
Slurry or broadcast system
What it is: a self-leveling slurry of 60 to 120 mils, or resin with quartz or sand broadcast into it and sealed. What the data says: Sika prints its slurry coverage at 60, 80 and 120 mils, and Sherwin-Williams says plants with heavy machinery tend to settle on aggregate-filled epoxy a quarter inch thick. Who it suits: PDR workshops, loading areas, cart routes and light manufacturing.
Novolac topcoat for chemical rooms
What it is: a highly cross-linked epoxy topcoat over a broadcast floor where acids or solvents are handled. What the data says: the 2012 Dur-A-Glaze Novolac sheet from Dur-A-Flex puts its film between 8 and 16 mils, offers "protection against chemicals, acids, solvents, and high temperatures," reaches full chemical resistance only after "7 days @ 70 degrees F," and "will amber under UV light." Who it suits: battery storage and secondary containment, two uses Dur-A-Flex lists.
Static-dissipative ESD floor
What it is: a resin floor that, in Stonhard's words, "prevents the buildup and sudden discharge of static electricity." What the data says: Dur-A-Flex's Dur-A-Gard ESD sheet prints a 16 mil film that "Dissipates 5000 Volt charge to Zero in 0.01 seconds" and rules it out for munitions or explosives plants. Who it suits: electronics benches, instrument rooms and labs like those at Mission Bay and in South San Francisco.
Commercial Epoxy Flooring FAQs
How much does it cost to epoxy 1000 sq ft?
On this page's arithmetic, 1,000 square feet comes to $4,000 to $10,000 by HomeGuide's national rate and $12,000 or more by HomeAdvisor's national commercial rate. HomeGuide's February 2026 page gives $4 to $10 a square foot installed, and HomeAdvisor (June 2026) prints $12 or more per square foot for commercial and industrial coatings; neither prints a total for that area. Neither is a San Francisco price, and HomeAdvisor says to budget for concrete repairs and prep work too.
What are the different types of epoxy flooring?
Resin floors come in five classes by build in Sherwin-Williams' ranking: a coating, a slurry, a broadcast floor, a trowel-applied floor and epoxy terrazzo, with thickness and expected life rising in that order. Chemistry varies within each class: standard epoxy, novolac for chemical rooms, static-dissipative coatings for electronics, and, outside epoxy, MMA for fast cures and urethane cement for restaurant kitchens. ICRI's guideline 310.2R bands slab materials by thickness, from 0 to 3 mil sealers up to concrete overlays over 1/4 inch.
How long will an epoxy floor last?
This site's sources hold no independent lifespan figure, only survey and maker wording. HomeAdvisor (June 2026) says commercial epoxy "that experiences heavy foot traffic may only last 2 to 3 years," and Sherwin-Williams says life expectancy rises with build, from thin coatings up to epoxy terrazzo. Sherwin-Williams' documents also say what works against a floor: a thin coating's low film build gives "poor chemical, impact, and traffic resistance," excess slab moisture can cause "delaminating of non-permeable resinous systems," and oils, grease and curing compounds must come off first.
What VOC limit applies to industrial floor coatings in the Bay Area?
The Air District's Table 2 limits under Regulation 8, Rule 3, effective on and after January 1, 2011, let an industrial maintenance coating hold 250 grams of VOC per liter and hold a floor coating to 100 g/L. A coating recommended for two or more specialty categories falls under "the most restrictive limit" of section 8-3-302.2, subject to its exceptions. The federal limits in 40 CFR Part 59 are 450 g/L and 400 g/L for those two categories.
Related Services in San Francisco
Free Commercial Epoxy Flooring Quote — San Francisco
Free quote