- General Polymers FasTop Topfloor SL13 — installs today as Poly-Crete SLB
- General Polymers FasTop Multi Topfloor SL23 — installs today as Poly-Crete SL
- General Polymers FasTop Multi Topfloor SL45 — installs today as Poly-Crete MD
- General Polymers FasTop Deco Flake SL45 — installs today as Hybri-Flex AC; family coverage on the Sherwin-Williams urethane cement page
- General Polymers FasTop Topfloor SL57 — installs today as Poly-Crete MDB
- General Polymers FasTop Multi Screed TG69 — installs today as Poly-Crete HF
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FasTop is legacy General Polymers naming for the urethane cement line Sherwin-Williams now sells as Poly-Crete. Specifications written before the 2025 Sherwin-Williams High Performance Flooring branding transition still call out FasTop codes: Topfloor SL13, Multi Topfloor SL23, Topfloor SL57, Multi Screed TG69. Every one of those codes maps to exactly one current product, and the routing table below carries the full set. Craftsman Concrete Floors installs against FasTop specifications nationwide as an authorized Sherwin-Williams High Performance Flooring installer. The legacy code identifies the current product; the current product’s data sheet governs the installation.
The name still circulates because the documents do. Master specs get copied forward from job to job, and legacy FasTop catalog pages remain live on the Sherwin-Williams industrial site, so a search on any FasTop code keeps landing on the old name. A specifier holding a FasTop section does not have an obsolete floor. The chemistry, a cementitious urethane mortar that bonds to concrete and flexes with it through thermal cycling, carries forward in the successor products. What changed is the name on the data sheet — and on a submittal, the name is what has to be right.
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How FasTop Codes Route to Current Products
One code, one destination. Each General Polymers FasTop system maps to a single current Sherwin-Williams product, and the mapping runs on the full legacy name rather than the short code. Read the spec’s complete product name and find its row above; the current product’s documentation is what gets submitted. The sections below cover the name history and the short-code trap, then the install path for a FasTop section scheduled today.
From General Polymers to Sherwin-Williams High Performance Flooring
Sherwin-Williams consolidated the General Polymers FasTop urethane cement line into Poly-Crete during its 2025 High Performance Flooring branding transition. That event is separate from the acquisition history buyers sometimes search for: Sherwin-Williams acquired Dur-A-Flex on July 1, 2022, and retained the Poly-Crete and Hybri-Flex product names it came with. The two threads converge in the current catalog. Poly-Crete is the urethane cement family, Hybri-Flex the hybrid flake and quartz family, and the FasTop codes survive only as former names on the products that replaced them.
SL45 Appears on More Than One FasTop Product
A bare code cannot be routed. General Polymers FasTop Multi Topfloor SL45 routes to Poly-Crete MD; General Polymers FasTop Deco Flake SL45 routes to Hybri-Flex AC. Same four characters, different system class, different current destination. A specification that reads only SL45 has to be resolved to its full product name before anything is submitted, because a self-leveling mortar and a decorative flake system are not substitutes for each other. The same discipline applies across the table. Full names route cleanly; short codes guess.
Decorative FasTop Systems and the Hybri-Flex Family
Hybri-Flex absorbed the decorative side of the FasTop line. Hybri-Flex AC carries a direct former name, General Polymers FasTop Deco Flake SL45; Hybri-Flex EC has no single FasTop predecessor, because the family absorbed several FasTop decorative flake and quartz systems rather than renaming one. A decorative FasTop section is therefore matched by build-up rather than by code alone. Detail on the current decorative architecture lives on the Hybri-Flex EC page and the Sherwin-Williams urethane cement page.
Installing Against a FasTop Section Today
A FasTop specification installs as its current successor product, under that product’s current data sheet. Craftsman runs the same substrate controls regardless of spec vintage. Pre-install moisture testing per ASTM F2170, concrete surface profile per ICRI 310.2, and the successor product’s own cure and return-to-service values govern the schedule. In-house W-2 crews mobilize nationwide. For the wider question of installing systems written into old specs under any legacy brand name, the urethane cement contractor page covers installer evaluation and closeout documentation.
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Frequently Asked Questions
FasTop is the General Polymers urethane cement line, a family of cementitious urethane mortar systems used on food processing, commercial kitchen, and industrial washdown floors. Sherwin-Williams consolidated the line into Poly-Crete, so every FasTop code now identifies a current Poly-Crete or Hybri-Flex product rather than a product ordered under its old name.
The FasTop name was retired into Poly-Crete during the 2025 Sherwin-Williams High Performance Flooring branding transition; the systems themselves carry forward under current names. A FasTop specification is installable today. Match the code in the routing table on this page, and the current product’s data sheet governs the submittal.
Match the full legacy name, never the bare code. Every General Polymers FasTop system maps to exactly one current Sherwin-Williams product, and the routing table above carries each mapping with a link to the product’s own page, where the current data sheet and specification detail live.
The full name decides it, because SL45 appears on more than one FasTop product. General Polymers FasTop Multi Topfloor SL45 installs today as Poly-Crete MD; General Polymers FasTop Deco Flake SL45 is now Hybri-Flex AC. A spec that reads bare SL45 gets resolved to its full product name before submittal.
Yes. FasTop, FastTop, and Fast Top all point to the same General Polymers urethane cement line; the manufacturer’s spelling is FasTop, one word with an internal capital T. Whichever rendering an old spec section carries, the codes route the same way once the full product name is matched.
Craftsman Concrete Floors installs the current successors to every FasTop system as an authorized Sherwin-Williams High Performance Flooring installer. Installations run under the current product’s data sheet, with pre-install moisture testing per ASTM F2170 and concrete surface profile per ICRI 310.2 documented before material goes down.
Hybri-Flex AC does. It was formerly General Polymers FasTop Deco Flake SL45, the decorative flake system in the legacy line. Hybri-Flex EC has no single FasTop predecessor because the family absorbed several FasTop decorative flake and quartz systems, so decorative legacy sections match by build-up, not by code alone.
Cove base is integral. It is formed in place from the same urethane cement mortar during installation, so the floor-to-wall joint disappears into a single monolithic surface. That is how urethane cement systems handle the wall-floor junction, and the integral cove base page on this site covers radius and termination detail.
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