- Current Name: Sherwin-Williams High Performance Flooring Poly-Crete HF
- Former Names: Dur-A-Flex Poly-Crete HF; General Polymers FasTop Multi Screed TG69
- System Type: 100% solids, aromatic, cementitious urethane — solid color, trowel-applied
- Thickness: 1/4″ to 3/8″
- Finish: Pigmented solid color; submittal color range includes grey, dark grey, charcoal, blue, green, red & chestnut
- Cove Base: Optional integral cove base
- Topcoat/Accessories: Self-priming; optional Poly-Crete Color-Fast topcoat where UV color retention is required
- Hardness: Shore D 85 (ASTM D-2240)
- Compressive Strength: 7,800 psi (ASTM C-579)
- Tensile Strength: 4,200 psi (ASTM D-638)
- Flexural Strength: 5,076 psi (ASTM D-790)
- Impact Resistance: >160 in-lbs (MIL-D-3134)
- Abrasion Resistance: 30 mg loss (ASTM D-4060, CS-17 wheel, 1,000 cycles)
- Slip Resistance (per the 01/25 submittal): SCOF >0.6 (ANSI B101.1); wet DCOF >0.42 (ANSI A326.3)
- Moisture Tolerance: 20 lbs/1,000 sq ft/24 hr (ASTM F-1869) or 99% RH (ASTM F-2170)
- Cure: Light foot traffic after 8 hours at 75°F; 24 hours at 50°F
Phone: +1 (844) 687-1961
Sherwin-Williams Poly-Crete HF is the heavy-duty trowel-applied urethane cement in the Poly-Crete line, a 100% solids, aromatic, cementitious urethane floor system installed at 1/4 to 3/8 inch. It is a pigmented, solid-color system. Specs written as FasTop TG69 map to Poly-Crete HF; the full untruncated legacy name is General Polymers FasTop Multi Screed TG69, and the product also carried the Dur-A-Flex Poly-Crete HF name before the 2025 High Performance Flooring branding transition. The current submittal package (01/25) lists Shore D hardness of 85 per ASTM D-2240 and compressive strength of 7,800 psi per ASTM C-579, values specific to Poly-Crete HF rather than shared across the Poly-Crete family.
Format separates Poly-Crete HF from the rest of the line. Poly-Crete SL, SLB, MD, and MDB place as self-leveling slurries; HF goes down by hand trowel at up to 3/8 inch where impact, point loading, and thermal cycling ask more of the floor’s mass. The system is self-priming, and it takes an optional integral cove base plus an optional Poly-Crete Color-Fast topcoat where UV color retention matters. Craftsman Concrete Floors installs Poly-Crete HF nationwide as an authorized Sherwin-Williams High Performance Flooring installer.
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Poly-Crete HF System Profile and Specification History
The values on this page come from Sherwin-Williams’ current 01/25 submittal package and 09/25 application instructions for Poly-Crete HF, corroborated by the system overview. Sherwin-Williams publishes Poly-Crete physical properties per system, not as family-wide platform numbers, so HF’s hardness and compressive strength differ from the self-leveling systems that share its brand name.
Trowel-Applied Build at 1/4 to 3/8 Inch
Poly-Crete HF places as a hand-troweled mortar at 1/4 to 3/8 inch, the thickest standard build in the Poly-Crete line. Mass is the point. The cured system rates greater than 160 in-lbs impact resistance per MIL-D-3134 and 30 mg abrasion loss per ASTM D-4060 on the CS-17 wheel at 1,000 cycles, and the manufacturer’s stated duty for the system is aggressive chemical and thermal attack. Typical placements named in the system overview include bottling and food processing areas as well as general manufacturing floors.
Formerly General Polymers FasTop Multi Screed TG69
The name on the spec dates the document. General Polymers FasTop Multi Screed TG69 identifies a spec written against Sherwin-Williams’ legacy General Polymers line, before the 2025 High Performance Flooring branding transition consolidated FasTop urethane cements into Poly-Crete. Dur-A-Flex Poly-Crete HF identifies one written before that same transition folded Dur-A-Flex into High Performance Flooring; Sherwin-Williams acquired Dur-A-Flex on July 1, 2022 and retained the Poly-Crete product names. Specs written as FasTop TG69 map to Poly-Crete HF and to no other current product. TG69 is also the only FasTop code that routes here, so a re-issued spec should carry the full untruncated legacy name rather than a bare code.
Substrate Prep and Moisture Limits per the 09/25 Application Instructions
Substrate acceptance for Poly-Crete HF is generous by resinous-flooring standards. The application instructions accept up to 20 lbs/1,000 sq ft/24 hours by calcium chloride test per ASTM F-1869, or 99% relative humidity by in-situ probe per ASTM F-2170, on a CSP 3-6 mechanical profile. Free edges get a 1/2 inch by 1/2 inch keyway. The system is self-priming, so the moisture and profile numbers are the gate rather than a primer selection. Craftsman runs pre-install moisture and substrate testing on every placement and turns the readings over in the closeout documentation.
Installed Nationwide by In-House W-2 Crews
Craftsman Concrete Floors installs Poly-Crete HF as an authorized Sherwin-Williams High Performance Flooring installer. In-house W-2 crews mobilize nationwide. Line-level selection between HF and the self-leveling systems is covered on the Sherwin-Williams urethane cement page, duty-level depth on the commercial kitchen flooring and brewery flooring pages and the food and beverage hub, and install scoping runs through the urethane cement contractor page or +1 (844) 687-1961.
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About Sherwin-Williams Poly-Crete HF
Poly-Crete HF is the heavy-duty trowel-applied system in the Poly-Crete cementitious urethane line — the thickest standard build, specified where chemical attack and washdown heat overlap with constant abrasion.
Trowel-Applied at 1/4 to 3/8 Inch
Poly-Crete HF is a pigmented, 100% solids cementitious urethane troweled at 1/4 to 3/8 inch depending on design requirements, with an optional integral cove base that carries the floor seamlessly up the wall for sanitation. The thickness is what separates it from the self-leveling Poly-Crete systems: where SL, SLB, MD, and MDB handle general, smooth, and slip-resistant duty, HF is the heavy-duty screed for the floors that punish everything else.
Aggressive Chemical and Thermal Attack
Poly-Crete HF goes where thinner systems fail: caustic and acid cleaning chemistry, hot washdown dropping onto floor that minutes earlier sat at ambient or chilled service, and the constant scrape of drums and pallets. As a Poly-Crete system it is formulated to follow USDA, FDA, CFIA, ADA, and OSHA guidelines, and the published platform carries a 9,000 psi compressive strength (ASTM C579). Exact thermal limits and performance values for this build are on the embedded data sheet, which governs the specification.
Formerly Dur-A-Flex Poly-Crete HF and FasTop Multi Screed TG69
If a specification calls for FasTop Multi Screed TG69, this is the system it now names: the 2025 branding transition consolidated the General Polymers FasTop line into Poly-Crete, and TG69 maps to Poly-Crete HF. The Dur-A-Flex Poly-Crete HF name carried straight through the July 1, 2022 acquisition by Sherwin-Williams. Craftsman confirms the legacy-to-current mapping during pre-bid review.
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Frequently Asked Questions
Poly-Crete HF is the heavy-duty trowel-applied urethane cement in the Sherwin-Williams High Performance Flooring Poly-Crete line, installed at 1/4 to 3/8 inch where chemical and thermal attack exceed what thinner self-leveling systems carry. The manufacturer’s system overview names bottling and food processing areas among its typical placements.
Two legacy names route to Poly-Crete HF. Dur-A-Flex sold the product as Poly-Crete HF before the Sherwin-Williams acquisition of Dur-A-Flex on July 1, 2022, and the 2025 High Performance Flooring branding transition consolidated General Polymers FasTop Multi Screed TG69 into the same current product.
Specs written as FasTop TG69 map to Poly-Crete HF, and only to Poly-Crete HF. Use the full untruncated legacy name, General Polymers FasTop Multi Screed TG69, when re-issuing the spec, because other FasTop codes route to different current products in the Poly-Crete and Hybri-Flex lines.
Installation runs 1/4 to 3/8 inch, hand-troweled, per the 09/25 application instructions, which also call for a 1/2 inch by 1/2 inch keyway at free edges. That makes it the thickest standard build in the Poly-Crete line; the SL, SLB, MD, and MDB systems place as thinner self-leveling slurries.
Format is the dividing line. Poly-Crete MD is a self-leveling system, while Poly-Crete HF is trowel-applied at 1/4 to 3/8 inch for heavier mechanical and thermal duty, and HF’s own 01/25 submittal lists Shore D 85 hardness per ASTM D-2240 with 7,800 psi compressive strength per ASTM C-579.
Light foot traffic is permitted after a minimum eight-hour cure at 75°F, extending to 24 hours at 50°F, per the application instructions. Heavy loads need additional time, and cure windows are scheduled zone by zone when the floor goes in around active operations.
Usually no. The system tolerates up to 20 lbs/1,000 sq ft/24 hours by calcium chloride test per ASTM F-1869, or 99% relative humidity by in-situ probe per ASTM F-2170, so most slabs qualify without a separate vapor barrier; Craftsman verifies with pre-install moisture testing and documents the readings before placement.
Craftsman Concrete Floors installs Poly-Crete HF as an authorized Sherwin-Williams High Performance Flooring installer. In-house W-2 crews mobilize nationwide, and install scoping starts through the urethane cement contractor page or at +1 (844) 687-1961.
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