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Restaurant Kitchen Floors in San Francisco, CA
Commercial kitchen flooring in San Francisco has to pass two sets of rules before it faces a dinner rush: the California Retail Food Code, whose section 114268 wants floors "smooth and of durable construction and nonabsorbent material that is easily cleanable" and coved at the walls, and whose section 114269, on new construction or extensive remodeling, puts drains in water-flushed floors and slopes those floors 1:50 to them; and the San Francisco Department of Public Health's construction guide, which applies those rules here and asks to see finish samples. The floor itself takes hot washdowns, grease, kettles and walk-in freezers. Urethane cement, which Sika, Dur-A-Flex and Sherwin-Williams each describe as cementitious urethane, is the resin family the makers point to for that work. Sherwin-Williams' overview for its Poly-Crete MD says its "coefficient of thermal expansion is similar to concrete, making it very thermal shock resistant"; thermal shock is the strain of a sudden temperature change, as when boiling water hits a cold floor.
No survey prices urethane cement; HomeAdvisor's national commercial line starts at $12 a sq ft (Jun 2026) · full pricing guide
No national survey this site uses prices urethane cement, so a restaurant floor has no published range of its own. The nearest line is HomeAdvisor's June 2026 national figure for commercial and industrial coatings, "$12 or more per square foot." HomeGuide's February 2026 epoxy survey has a kitchen row, 100 to 200 square feet for $400 to $2,000 installed nationally, in a table with garages, basements, patios and driveways, so that row is an epoxy coat, not urethane cement. Angi (August 2026) names resin type, floor area and preparation as the drivers, and a kitchen adds work no survey prices: the cove base, the floor at each drain and floor sink, and the days the room is closed. None of these is a San Francisco price; the national cost table lists the surveys with their dates.
Urethane cement is laid far thicker than a coating. Dur-A-Flex's Poly-Crete HF sheet (6/18/2013) describes "a 100% solids, aromatic, cementitious urethane system" laid 1/4 to 3/8 inch thick to suit the design, serviceable from -100 to 220 degrees F, and states that "Repeated exposure to hot oil or steam does not cause pitting, cracking or crazing." Sika's Sikafloor 22NA PurCem sheet (Edition 2.14.2018) describes a self-leveling, three-component slurry at 3/16 to 1/4 inch, rated from -40 degrees F to 212 degrees F, that "Achieves highest performance ratings according to ASTM G21 resistance to fungi and ASTM D3273 resistance to mold growth." Color belongs in the spec too: Sika warns that PurCem "Will discolor over time when exposed to sunlight (UV) and under certain artificial lighting conditions."
The urethane cement sheets accept wetter slabs than Sherwin-Williams' general limits for resin floors, but the grease still has to come out. Dur-A-Flex says Poly-Crete HF "Can be installed with moisture levels up to 20 lbs/1,000 sf/24 hrs," where Sherwin-Williams' Form G-1 sets 3 pounds by ASTM F1869 for its resin floors, and Sika's PurCem sheet accepts readings under 100% relative humidity by ASTM F2170 against Form G-1's 80%. Form G-1 lists "oils, grease, wax, sealers, curing compounds" among what must come off, and Sika names "detergent scrubbing with a heavy duty cleaner/degreaser" and steam cleaning. The profile is then cut mechanically, since Sherwin-Williams has published that "Acid Etching Is No Longer Recommended" and notes that agencies restrict washing acid down a floor drain. Cracks and spalls are repaired before the new floor goes down, as the concrete resurfacing and repair page explains.
Closing days come from the data sheets and the room's temperature, not from a promise. Dur-A-Flex gives Poly-Crete HF "Light Traffic 6-8 hours" and "Full Service 3 - 5 days," and rates 50 degrees F to 85 degrees F as the range most suited to applying it; Sika's PurCem sheet wants ambient humidity between 30% and 85% while it is laid and while it cures. At NOAA's Downtown San Francisco station, the 1991-2020 normal daily minimum for January is 46.6 degrees F and the normal daily maximum for September is 70.2 degrees F. Those are outdoor air figures, listed on the San Francisco floor numbers page, so a kitchen left unheated overnight is measured, not assumed. Before the crew arrives, empty the walk-ins near the work, move equipment off the floor, and plan reopening around full service rather than walk-on time.
For a written quote, have a floor plan with the drains, floor sinks and fixed equipment marked, the hours you can close, and what is on the floor now. The quote should give the system and thickness for each zone, the cove's height and radius, how the floor meets each drain, the moisture result, and the cure and traffic times in writing. A restaurant job falls under California's contractor licensing on the same terms as a house, as the license question below sets out. Requests made on this page are handed to an independent local installer; that installer holds a California contractor license, writes the quote and signs the contract with you. Confirm the license with CSLB's online check before signing, and see the San Francisco hiring guide for the contract points California sets.
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Signs a Kitchen Floor Is Due for Urethane Cement
These are conditions a chef, owner or manager can see on a shift or at an inspection, each tied to the code section or data sheet that makes it matter. Any one of them is reason to ask for a site visit and a moisture test.
- Water stands after washdown instead of running to the drains, where the Retail Food Code's section 114269(a) asks for floors sloped 1:50 on new construction or extensive remodeling.
- A topset rubber base runs along the cook line walls, which the San Francisco health department's guide says "is not approved except in customer areas."
- Grout lines between quarry tiles have opened or darkened, the lines Stonhard says a jointless kitchen floor eliminates to prevent bacteria buildup.
- Hot oil, steam or boiling water reaches the floor at fryers, kettles or the dish machine, the exposure Dur-A-Flex rates Poly-Crete HF to take up to 220 degrees F.
- The floor turns slick when wet near the dish area or the line, where the Retail Food Code's section 114268(e) permits antislip finishes "in areas where necessary for safety reasons."
- A walk-in cooler or freezer floor is cracking or lifting, a cold room where Sika rates its PurCem slurry for service down to -40 degrees F.
Retail Food Code Sections 114268 and 114269: Floors, Coves, Drains
The California Retail Food Code sets the floor, the cove and the drains in two sections of the Health and Safety Code. Section 114268(a) covers floors outside sales areas where food is prepared, prepackaged or stored, where utensils are washed, where refuse is stored, and in janitorial, toilet and handwashing areas: they "shall be smooth and of durable construction and nonabsorbent material that is easily cleanable." Subdivision (b) requires coving at the wall "with a 3/8 inch minimum radius coving" that extends "up the wall at least 4 inches," except where food is stored only in unopened original containers. Subdivision (e) allows "antislip floor finishes or materials in areas where necessary for safety reasons." Section 114268.1 limits cleaning to dustless methods such as wet cleaning and vacuuming. Section 114269(a) applies "Upon new construction or extensive remodeling": floors that are water-flushed, or where equipment is cleaned by pressure spray, get floor drains and are "sloped 1:50 to the floor drains," and subdivision (b) adds floor sinks for liquid waste from equipment.
Two things follow for a resin floor. The cove has to meet those dimensions in whatever material the floor uses, so the quote should state its height and radius. And where a floor does not fall 1:50 to its drains, Sherwin-Williams' Form G-1 says slopes and areas around drains "must be repaired prior to the placement of the polymer system and/or the system must be designed to offset the thickness of the irregularities"; ask the installer which it will be.
What San Francisco's Health Department Guide Adds to the Code
The San Francisco Department of Public Health applies the state rules through its "Construction Guideline for Retail Food Facilities," and on four points its wording is more specific than the code. Materials: floors outside sales and dining areas "shall be smooth and of durable construction," the guide's approved examples include quarry tile, commercial sheet vinyl and epoxy floors laid without joints, and "It is recommended that the floor finish is light-colored." The base: "Topset rubber base is not approved except in customer areas," and the cove runs up the wall "and toe-kicks of floor-mounted counters/cabinets" at least 4 inches, with a 3/8 inch minimum radius.
The slope: floors with drains need "A positive slope of 1:50," which "must be measured from wall to wall within the food preparation or utensil wash area," and the guide rules out a dish around the drain: "Sloping the floor immediately adjacent to the floor drain, e.g., a three to four diameter depression, is not acceptable." The drains: equipment that discharges liquid waste is drained "by means of indirect waste pipes, through an air gap into an open floor sink." The guide also says "Submit physical finish samples for review and approval," so a sample of the finish goes to the department for review. The copy read here shows no date, so confirm the current version with the department.
Wet and Greasy Floors: Slip Test Values and Grit Choices
A kitchen floor grips through its surface texture, and the numbers that rate that grip carry limits of their own. ANSI A326.3, the hard-surface flooring standard the Tile Council of North America explains, was revised and approved in 2021 and sorts floors into five use categories. "Interior, Wet" calls for a wet dynamic coefficient of friction (DCOF), the force to keep an object sliding, divided by its weight, of at least 0.42 unless the maker declares its own value, and "Oils/Greases," the category nearest a fryer line, carries no set number; the maker declares it. TCNA adds that DCOF "does not predict the likelihood a person will or will not slip-on a given surface." Texture comes from aggregate.
Sherwin-Williams says sand is the inexpensive choice "but aluminum oxide can be substituted to provide a much harder, longer lasting profile," that "Urethane enamel topcoats are inherently less slippery than epoxy finishes," and that silica, polypropylene or aluminum oxide in a topcoat can give "a relatively smooth (and cleanable) finish with a modest degree of slip-resistance." That is the trade-off the code sets: section 114268 wants a floor that is "easily cleanable," and subdivision (e) allows antislip finishes where safety needs them. Federal OSHA's 29 CFR 1910.22(a)(2) asks employers with wet processes to keep drainage working and, where feasible, to give workers dry standing places such as mats. Ask the installer for the texture's test value, the grit size and a cured sample you can scrub.
Which Floor for Which Part of the Kitchen
A restaurant is several rooms with different loads, and a quote can name a different system for each zone so long as each zone that section 114268 covers meets it. Decide by the hottest, wettest use each zone sees, and keep the cove and drain details the same throughout.
Thick urethane cement on the line
What it is: a 1/4 to 3/8 inch urethane cement such as Poly-Crete HF, coved up the wall. What the data says: Dur-A-Flex puts its service range at -100 to 220 degrees F and rates it for repeated hot oil and steam without pitting, cracking or crazing, and for concrete only 7 to 14 days old. Who it suits: fryer and range lines, kettle areas and dish rooms that are hosed down hot.
Urethane slurry for prep and cold rooms
What it is: a 3/16 to 1/4 inch self-leveling slurry such as Sikafloor 22NA PurCem. What the data says: Sika rates it from -40 degrees F to 212 degrees F and states that it "Meets the requirements of USDA for use in food plants"; Sherwin-Williams notes that regulators cannot stamp approval on any specific product. Who it suits: prep kitchens, bakeries, walk-in coolers and freezers.
Epoxy coating for dry rooms
What it is: a 100% solids epoxy roll coat or broadcast floor, a type the health department's guide includes among its approved examples. What the data says: Westcoat lists "industrial kitchens" among the uses of its EC-36 but wants 24 hours of cure before water touches it, and Stonhard says "Epoxy floors are hard, where urethane floors 'give' more." Who it suits: dry storage, offices, staff rooms and corridors away from hot water.
Color is a choice in every zone. The guide says "It is recommended that the floor finish is light-colored," and Sika says its PurCem discolors in sunlight and under some artificial light, so ask to see a cured sample under the kitchen's own lighting. Warehouses, labs and shops without food service are covered on the commercial epoxy flooring page.
Restaurant Kitchen Floors FAQs
What is the best commercial kitchen flooring?
The law names no single material: section 114268 of the California Retail Food Code asks for a smooth, durable, nonabsorbent, easily cleanable floor, coved at the walls. San Francisco's health department guide includes quarry tile, commercial sheet vinyl and epoxy floors laid without joints among its approved examples. For hot, wet zones the resin makers point to urethane cement: Sherwin-Williams calls cementitious urethane finishes the type of material used most in food and beverage processing, and Dur-A-Flex rates Poly-Crete HF for hot oil and steam.
Does a restaurant kitchen floor need coving in California?
Yes: section 114268(b) of the Health and Safety Code requires coving where floor meets wall, with at least a 3/8 inch radius, carried at least 4 inches up the wall, except where food is stored only in unopened original containers. San Francisco's health department guide carries the cove onto the toe-kicks of floor-mounted counters and cabinets and does not approve a topset rubber base outside customer areas. The installer's quote should state the cove's height, radius and material.
How long is a kitchen closed for a new floor?
The data sheet and the room decide it, and no sheet promises a date. Dur-A-Flex gives its Poly-Crete HF urethane cement light traffic after 6 to 8 hours and full service after 3 to 5 days, and calls it most suited to application between 50 degrees F and 85 degrees F; Westcoat's EC-36 epoxy needs at least 24 hours before it meets water. Demolition, grinding, slab repair and coving come first. Ask for the schedule in writing, with the temperatures it assumes.
Does a restaurant floor job in California need a licensed contractor?
Yes. The small-job exemption in Business and Professions Code section 7048 ends at $1,000 in labor and materials, and it does not cover work that needs a permit or a hired helper; section 7030.5 then puts the license number on the contract. CSLB's classes that touch floors include C-8 concrete, C-15 flooring, C-33 painting and C-61/D-12 synthetic products, and no CSLB page this site has read names one class for resin floors, so ask which class the license carries. The home improvement contract rules in section 7159 are for residential property, CSLB's fact sheet says, so a restaurant's terms are what its contract states; the final word rests with CSLB and the statutes.
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