- Current name: Sherwin-Williams High Performance Flooring Hybri-Flex EC
- Former names: Dur-A-Flex Hybri-Flex EC (name retained after the July 1, 2022 acquisition). No FasTop predecessor — the Hybri-Flex family absorbed several General Polymers FasTop decorative flake and quartz systems, none mapping to EC
- System type: Decorative hybrid — double vinyl chip broadcast on a cementitious urethane (Poly-Crete SL) body coat
- Thickness: Nominal 1/8″ to 3/16″
- Finish: Gloss (60° gloss 75 ±10) or satin (50 ±10), with or without grit
- Topcoat / accessories: Resutile AT topcoat (formerly Armor Top); Resuflor Glaze broadcast and grout coat (formerly Dur-A-Glaze #4 in E-series stacks); Poly-Crete TF primer on very porous substrates
- Hardness: Shore D 75-80 (ASTM D-2240)
- Compressive strength: 16,000 psi (ASTM D-695)
- Tensile strength: 3,700 psi (ASTM D-638)
- Bond to concrete: 400 psi — substrate fails (ASTM D-4541)
- Water absorption: 0.04% (ASTM D-570)
- Abrasion: Taber 4-12 mg loss by finish and grit (ASTM D-4060)
- Slip resistance: SCOF >0.6 (ANSI B101.1); wet DCOF >0.42 (ANSI A326.3)
- Elevated temperature / thermal shock: No slip or flow (MIL D-3134, resistance to elevated temperatures); no cracking or loss of adhesion (MIL F-52505 thermal shock)
- Cure: Full chemical and abrasion resistance in 7 days at 70°F; application 60°F to 85°F
Phone: +1 (844) 687-1961
Sherwin-Williams Hybri-Flex EC is a decorative floor system on a cementitious urethane base — a Poly-Crete SL body coat, a double broadcast of macro or micro vinyl chip, and a Resutile AT wear topcoat, at a nominal 1/8 to 3/16 inch. Specs written as Dur-A-Flex Hybri-Flex EC map to Sherwin-Williams High Performance Flooring Hybri-Flex EC; the name carried over unchanged when Sherwin-Williams acquired Dur-A-Flex on July 1, 2022. EC is a hybrid, not a plain urethane cement. The base coat brings the moisture tolerance of the Poly-Crete line, while the broadcast and grout layers build a decorative vinyl chip finish that industrial urethane cement systems do not carry. Craftsman Concrete Floors installs Hybri-Flex EC as an authorized Sherwin-Williams High Performance Flooring installer.
Sherwin-Williams publishes the system for decorative commercial and institutional duty, and the recommended-use list reads that way: hospitals, lobbies, hallways, restrooms, veterinary clinics, retail, schools, supermarkets, kennels. The typical buyer arrives holding a finish schedule. EC earns its place on that schedule where the slab is fresh, damp, or salt-contaminated and the finish still has to be a chip floor; the washdown-grade work stays with the industrial Poly-Crete line.
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About Sherwin-Williams Hybri-Flex EC
One industrial base coat, two decorative layers, one data sheet. Figures on this page trace to the current Sherwin-Williams system overview (revised 6-11-24) and application instructions (01/25), and the submittal package linked below carries the complete property tables, color charts, and warranty terms. The sections that follow cover the build, the substrate conditions, the naming history, and the boundary between this system and its industrial siblings.
Nominal 1/8 to 3/16 Inch, Shore D 75-80 Under the Chip Finish
The installed system runs a nominal 1/8 to 3/16 inch and reads industrial under the decorative finish. The current system overview lists Shore D hardness of 75-80 (ASTM D-2240), compressive strength of 16,000 psi (ASTM D-695), tensile strength of 3,700 psi (ASTM D-638), and a 400 psi bond to concrete (ASTM D-4541), a pull value at which the substrate fails before the bond does. Water absorption is 0.04% (ASTM D-570). Under MIL D-3134 the system shows no slip or flow at elevated temperature, a resistance-to-elevated-temperatures result rather than a thermal rating, and MIL F-52505 testing separately reports no cracking or loss of adhesion under thermal shock. Published slip values run above 0.6 static (ANSI B101.1) and above 0.42 wet DCOF (ANSI A326.3).
High-Moisture and Salt-Contaminated Slabs Are the Use Case
Moisture tolerance is the reason EC exists as a hybrid instead of a chip system on plain epoxy. Per the current system overview, the Poly-Crete SL body coat can be applied to high-moisture concrete and tolerates high soluble ion (salt) contamination, which takes fresh pours and rough existing slabs off the problem list. Preparation is a CSP 3-4 profile. Shot blasting is the preferred method, the system is self-priming in most applications, and the application instructions specify Poly-Crete TF primer first on very porous substrates. Craftsman still runs pre-install moisture and substrate testing, ASTM F2170 in-situ relative humidity where the schedule allows, because a documented baseline stands behind the installation record even under a moisture-tolerant system.
Formerly Dur-A-Flex Hybri-Flex EC, Never a FasTop
The name on this system barely moved while the names around it changed. Dur-A-Flex Hybri-Flex EC became Sherwin-Williams High Performance Flooring Hybri-Flex EC after the July 1, 2022 acquisition, with the product name retained outright. The renames landed at the accessory layer instead; the wear coat and grout coat now carry Resutile and Resuflor names, and the Key Specifications list above pairs each with the name legacy documents used. EC has no FasTop predecessor to map. The Hybri-Flex family absorbed several General Polymers FasTop decorative flake and quartz systems, but no single FasTop code routes to EC, and a spec carrying a FasTop decorative code is calling for a different system entirely.
Where EC Stops and Poly-Crete Starts
A spec that names Hybri-Flex EC usually arrived by one of two roads. Either a designer picked a chip floor that could survive a damp slab, or a facility standardized on Sherwin-Williams High Performance Flooring and EC is its decorative entry. Craftsman Concrete Floors is an authorized Sherwin-Williams High Performance Flooring installer; in-house W-2 crews mobilize nationwide and install the industrial siblings as well, so a project that pairs EC in public zones with Poly-Crete SLB, MDB, or HF in wet process areas runs through one installer. Kill floors and CIP-washed process bays are Poly-Crete territory. The boundary case worth a review is the back-of-house corridor that sees carts and occasional washdown, and that call gets made at spec review against the measured exposure.
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Frequently Asked Questions
Hybri-Flex EC is a decorative hybrid floor system: a Poly-Crete SL cementitious urethane body coat under a double broadcast of macro or micro vinyl chip set in Resuflor Glaze, finished with a Resutile AT wear topcoat at a nominal 1/8 to 3/16 inch. The base coat carries the moisture tolerance; the finish layers carry the appearance.
Dur-A-Flex Hybri-Flex EC. Sherwin-Williams acquired Dur-A-Flex on July 1, 2022 and retained the Hybri-Flex product names, so the mapping is one-to-one. There is no FasTop code behind EC; the Hybri-Flex family absorbed several General Polymers FasTop decorative flake and quartz systems, but none of those codes routes to EC specifically.
The same system under the current Sherwin-Williams High Performance Flooring name. Product roles are unchanged from the Dur-A-Flex documents, the accessory names updated after the acquisition, and the Key Specifications list above pairs each current name with its former one. Submit the spec as written and the current submittal package (01/25) answers it under the new names.
Poly-Crete SL is the body coat inside Hybri-Flex EC. Installed alone, Poly-Crete SL is an industrial self-leveling urethane cement at roughly 1/8 inch for processing environments; EC adds the double vinyl chip broadcast and a Resutile AT topcoat over it, trading washdown duty for a decorative finish at 1/8 to 3/16 inch. Pick EC for public-facing commercial and institutional space and a Poly-Crete system for washdown and process chemistry.
Yes. The system overview states the body coat can be applied to high-moisture concrete and handles high soluble ion (salt) contamination, which covers fresh pours and slabs with vapor drive that would blister an all-epoxy chip system. It is self-priming in most applications; very porous substrates get Poly-Crete TF primer first, over a CSP 3-4 shot-blasted profile. Craftsman documents the slab beforehand with pre-install moisture and substrate testing.
Resutile AT, in gloss or satin, with or without grit. The 60-degree gloss readings are 75 plus-or-minus 10 for gloss and 50 plus-or-minus 10 for satin, and Taber abrasion runs 4 to 12 mg loss (ASTM D-4060) depending on finish and grit selection. The system overview also lists alternative topcoats for unique facility conditions.
Full chemical and abrasion resistance occurs in 7 days at 70°F, per the application instructions. Recoat windows at 70°F run 6 hours minimum after the Poly-Crete SL body coat and 4 hours after the second broadcast. The Resuflor Glaze grout coat needs 10 hours before the topcoat goes down. Application is best between 60°F and 85°F.
Craftsman Concrete Floors, an authorized Sherwin-Williams High Performance Flooring installer with in-house W-2 crews that mobilize nationwide. The same crews install the industrial Poly-Crete systems, so a building with decorative EC at the front and washdown-grade urethane cement in the back reviews one set of submittals. Send the drawings through the proposal form on this page for a spec review.
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