- Product: Sherwin-Williams Poly-Crete MDB — 100% solids, seamless cementitious urethane system with natural quartz broadcast (slip-resistant finish)
- Nominal Thickness: 1/4 inch, broadcast and sealed
- Finish: slip-resistant natural quartz broadcast; chemical- and abrasion-resistant topcoat (TF Plus standard; Color-Fast where UV stability is required)
- Body Coat: impact resistant, thermal-shock resistant, moisture mitigating (primer can be eliminated in most environments)
- System Performance (Poly-Crete platform, per Sherwin-Williams system data):
- – Compressive strength 9,000 psi (ASTM C579)
- – Hardness Shore D 75–80 (ASTM D2240)
- – Exact per-product values are on the embedded data sheet
- System Build: primer (where required), Poly-Crete MD body coat, natural quartz broadcast, grout coat, Poly-Crete TF Plus topcoat
- Color: Poly-Crete system colors, 10 standard
- Typical Uses: food and beverage processing, commercial kitchens, breweries and distilleries, warehouses, and high-impact, high-traffic process areas
- Former Names: Dur-A-Flex Poly-Crete MDB; General Polymers FasTop Topfloor SL57
- Authorized Installer: Sherwin-Williams High Performance Flooring; in-house W-2 crews mobilize nationwide
Phone: +1 (844) 687-1961
Sherwin-Williams Poly-Crete MDB is a 100% solids, seamless 1/4-inch cementitious urethane floor system with a natural quartz aggregate broadcast that produces a slip-resistant finish. The body coat resists impact and thermal shock and is moisture mitigating — it can eliminate the primer in most environments — while the topcoat carries chemical and abrasion resistance (Poly-Crete TF Plus standard; Color-Fast where UV stability matters). It is the heavier broadcast member of the Poly-Crete line: thicker and more impact-resistant than Poly-Crete SLB, built for demanding wet and high-traffic process floors. If your specification still reads Dur-A-Flex Poly-Crete MDB or the older General Polymers FasTop Topfloor SL57, this is the same system under its current Sherwin-Williams High Performance Flooring name. Craftsman Concrete Floors installs Poly-Crete MDB nationwide as an authorized Sherwin-Williams High Performance Flooring installer.
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About Sherwin-Williams Poly-Crete MDB
Poly-Crete MDB is the heavier slip-resistant broadcast system in the Poly-Crete cementitious urethane line. It earns its spot where a wet floor also takes a beating — natural quartz broadcast for grip over an impact-rated 1/4-inch body coat, with the moisture tolerance to install where epoxy cannot.
Slip-Resistant Broadcast at 1/4 Inch
Poly-Crete MDB places a Poly-Crete MD body coat, broadcasts natural quartz aggregate to a slip-resistant texture, and finishes with a chemical- and abrasion-resistant Poly-Crete TF Plus topcoat at a nominal 1/4 inch; where UV exposure or color retention matters, Poly-Crete Color-Fast is the topcoat to specify. The added thickness and impact resistance separate it from Poly-Crete SLB at 3/16 inch: MDB is specified where wet floors also take heavy impact and rolling load, such as processing and packaging areas. Texture can be tuned to the facility, and a sample should be tested before installation on slip-critical floors.
Impact, Thermal Shock, and Moisture Tolerance
The Poly-Crete body coat takes impact and thermal shock — hot washdown cycling against ambient or chilled process zones — and is moisture mitigating: it installs over damp or green concrete and in most environments eliminates the separate moisture-mitigation primer an epoxy floor would require. The published Poly-Crete platform carries a 9,000 psi compressive strength (ASTM C579) and a Shore D hardness of 75 to 80; exact figures for this build are on the embedded data sheet.
Formerly Dur-A-Flex Poly-Crete MDB and FasTop Topfloor SL57
Two legacy names map to this system. Dur-A-Flex Poly-Crete MDB is the direct one: Sherwin-Williams acquired Dur-A-Flex on July 1, 2022, and the product kept its name. The General Polymers side is FasTop Topfloor SL57, which the 2025 branding transition folded into Poly-Crete MDB. Craftsman cross-references either legacy callout to the current system during pre-bid review.
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Frequently Asked Questions
Poly-Crete MDB is the Poly-Crete MD body with a quartz aggregate broadcast: a 100% solids cementitious urethane finished with slip-resistant texture and a choice of topcoats, built for food and beverage processing and commercial kitchens. The broadcast locks into the wet urethane matrix; the texture is built into the floor’s body. Topcoat options include Poly-Crete TF Plus for a matte finish or Color-Fast for semi-gloss with UV color stability. Specifiers who know the line from its Dur-A-Flex years will recognize MDB as the standard wet-process grade; Sherwin-Williams acquired Dur-A-Flex on July 1, 2022 and kept the product identity. The data sheet on this page carries the full system detail for submittals. Craftsman Concrete Floors installs MDB nationwide as an authorized Sherwin-Williams HPF installer.
Food floors get hit from three directions at once: wet traffic, thermal shock, and aggressive sanitation. MDB answers with broadcast grip, urethane cement chemistry, and a sealed topcoat in one system. The quartz texture keeps footing under wash water, grease, and process spillage where smooth floors become incident reports. The cementitious urethane base absorbs hot-washdown and cold-rinse cycling that fractures epoxy, with service capability spanning freezer to steam-adjacent zones. Topcoats seal the broadcast for cleanability, balancing grip against the sanitation program’s scrub regime. Integral cove base and slope-to-drain detailing complete the hygienic envelope inspectors audit. Craftsman Concrete Floors installs MDB in operating food plants and kitchens, phased overnight and section-by-section around production.
MDB is MD plus a quartz broadcast and a topcoat. Same 100% solids cementitious urethane body, different surface strategy. MD self-levels to a bare matte wearing surface with no topcoat, suited to bottling and warehouse floors where flatness and simplicity win. MDB broadcasts quartz into the same body and seals it under TF Plus or Color-Fast, trading MD’s simplicity for slip resistance and finish options. Both carry the family’s thermal and chemical performance. The decision is a slip-assessment and sanitation-program call; durability is equal on both sides. Wet, greasy, washdown-heavy floors point to MDB. Dry-to-damp smooth-finish floors point to MD. Craftsman Concrete Floors specifies between them from your measured floor conditions. Texture is never the default.
MDB takes two standard topcoats. Poly-Crete TF Plus is a matte finish matching the family’s standard look; it locks the broadcast and sets the cleanability of the textured surface. Poly-Crete Color-Fast is a semi-gloss with UV stability for color retention, and it answers the aromatic-urethane ambering behavior: where daylight or metal-halide lighting would yellow a standard finish, Color-Fast holds color without affecting performance. Topcoat selection also tunes the grip-versus-cleanability balance, since the seal partially fills the broadcast profile. The MDB-with-TF-Plus system carries service ratings from deep-freeze to live-steam exposure zones. Craftsman Concrete Floors matches the topcoat to your lighting, color, and sanitation requirements at specification.
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