- Current Name: Sika Ucrete SLB (System Data Sheet, November 2025, Version 01.01)
- Former Names: None — new system designation; comparable legacy role: Sikafloor PurCem SLB (March 2021 system sheet)
- Not the Same System As: Sherwin-Williams Poly-Crete SLB — a different manufacturer’s system sharing the role letters; data sheet: Poly-Crete SLB
- System Type: Self-leveling polyurethane cementitious broadcast system on Sika Ucrete HS24 NA
- System Build: Ucrete HS24 NA slurry with Sikafloor-508 aggregate broadcast, 80-160 mils; Sika Ucrete TC31 NA topcoat, 15-20 mils
- Thickness: 80-160 mils (2-4 mm) nominal; 80 mils minimum; 125 mils minimum Ucrete HS24 NA before broadcast in MVT base-layer service
- Finish: Textured, slip-resistant; standard Sika Ucrete colors; solid or multi-color quartz broadcast options
- Service Temperature: -40°F to 248°F (120°C)
- Topcoat / Accessories: Sika Ucrete TC31 NA standard; alternate Sikafloor-521 with Sikafloor Urethane Pigment Pack; optional primer Sikafloor-2570 WB
- Shore D Hardness: 83, system value (ASTM D2240)
- Compressive Strength: 6,961 psi at 28 days (ASTM C579)
- Flexural / Tensile Strength: 2,726 psi (ASTM C580) / 1,290 psi (ASTM C307)
- Abrasion Resistance: 0.07 g loss, CS-17 wheel, 1,000 cycles/1,000 g (ASTM D4060)
- Substrate: ICRI CSP 3-6 profile; 3,625 psi minimum compressive; applies where less than 100% RH per ASTM F2170
- Crews: In-house W-2 crews mobilize nationwide — Sika Certified + Authorized Sherwin-Williams High Performance Flooring installer, since 1999
Phone: +1 (844) 687-1961
Sika Ucrete SLB is a self-leveling polyurethane cementitious broadcast system engineered with Sika Ucrete HS24 NA at 80-160 mils (2-4 mm), published by Sika as a US system data sheet in November 2025. The build runs in two layers: the Ucrete HS24 NA slurry receives a Sikafloor-508 aggregate broadcast into the wet material, and a Sika Ucrete TC31 NA urethane topcoat at 15-20 mils seals in a textured, slip-resistant wearing surface. Sika Ucrete SLB is not Sherwin-Williams Poly-Crete SLB. Two manufacturers independently arrived at the same role letters; the Poly-Crete SLB data sheet is linked under Key Specifications below. Craftsman Concrete Floors installs the Sika Ucrete line nationwide as a Sika Certified Installer.
The name is seven months old; the role is not. Sika’s legacy Sikafloor PurCem SLB system sheet (March 2021) documented the same 80-160 mil self-leveling broadcast role on Sikafloor-24 NA PurCem, the base product Sika’s current US documents publish as Ucrete HS24 NA. Read against its smooth sibling, Ucrete SL builds on the same base at the same thickness band and finishes as an easy-clean self-leveler with medium slip resistance, while Ucrete SLB trades the smooth profile for broadcast texture where wet-floor traction governs. Both carry the HS24 NA service range of -40°F to 248°F.
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Ucrete SLB System Build, Duty Range, and Line Position
Every specification on this page traces to two current Sika documents: the Sika Ucrete SLB System Data Sheet (November 2025, Version 01.01) and the Sika Ucrete HS24 NA product documentation. Ucrete SLB is new enough that almost no third-party documentation exists. The sections below cover what the sheets establish: build layers, the thickness band, moisture tolerance, and where the system sits against Ucrete SL, Ucrete SLB+, and the UD 200 screeds.
Sika Ucrete SLB Build — HS24 NA Slurry, Quartz Broadcast, Sealed Texture
The standard stack is two layers. Sika Ucrete HS24 NA goes down as a self-leveling slurry at 80-160 mils with Sikafloor-508 aggregate broadcast into the wet material at roughly 0.15 lb per square foot, and Sika Ucrete TC31 NA seals the texture at 15-20 mils. A slurry kit covers about 107 square feet at 80 mils; a Ucrete TC31 NA kit covers about 224 square feet at 15 mils. Sikafloor-2570 WB at 3-5 mils or Ucrete TC31 NA can serve as an optional primer, and Sikafloor-521 with the Sikafloor Urethane Pigment Pack is the documented alternate seal coat. Application runs at 40-100°F ambient and substrate temperature.
Green Concrete at 7-10 Days Is Inside the Application Window
Sika’s sheet permits application on green concrete at typically 7-10 days, with the full 28-day cure explicitly not required. It also permits installation over partially cured substrates reading above 4% surface moisture on a Tramex CME-type meter, and on slabs measuring under 100% relative humidity per ASTM F2170. For schedule-driven projects that is the headline: this floor can go down weeks before a standard epoxy system’s substrate moisture limits would allow, because epoxy’s vapor-impermeable film delaminates when slab moisture has nowhere to go. When Ucrete SLB serves as the base layer of a moisture vapor tolerant system, the Ucrete HS24 NA layer runs at least 125 mils before any aggregate broadcast. Surface prep is mechanical. The target is an ICRI CSP 3-6 profile on concrete at 3,625 psi compressive minimum.
Line Position — Ucrete SL, Ucrete SLB+, and UD 200
Four systems bracket Ucrete SLB. Ucrete SL is its smooth sibling: the same Ucrete HS24 NA base at the same 80-160 mil band, finished as an easy-clean self-leveler with medium slip resistance instead of broadcast texture. Ucrete SL+ and Ucrete SLB+ run instead on Ucrete HS22 NA, the solid-color slurry Sika positions for aggressive environments such as food processing plants, freezers, and coolers; Ucrete SLB+ is the broadcast variant of that pair. UD 200 is the line’s heavy-duty screed for abrasion, impact, chemical attack, and thermal shock duty. Specify Ucrete SLB for medium-to-heavy loading and abrasion in general industrial and commercial space where wet-floor traction matters. Where a smooth profile cleans easier than texture, Ucrete SL is the better call.
A November 2025 Designation With a 2021 Document Trail
Ucrete SLB entered Sika’s US system library in November 2025, so a spec engineer meeting the name for the first time has almost nothing third-party to check it against. The document trail is older than the name. Sikafloor PurCem SLB (Sika’s legacy US branding) carried a March 2021 system sheet defining the same self-leveling broadcast role at the same 80-160 mil band, built on Sikafloor-24 NA PurCem, the product Sika’s current documents publish as Ucrete HS24 NA. A specification that still reads Sikafloor PurCem SLB routes to the current Ucrete SLB sheet; confirm the substitution against both documents before bid, since layer options and coverage rates are stated per revision.
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Frequently Asked Questions
Sika Ucrete SLB is a self-leveling polyurethane cementitious broadcast system engineered with Sika Ucrete HS24 NA at 80-160 mils (2-4 mm). Sikafloor-508 aggregate is broadcast into the wet slurry and sealed with a Sika Ucrete TC31 NA topcoat, producing a textured, slip-resistant floor for medium-to-heavy loading in industrial and commercial facilities.
No. Two manufacturers independently arrived at the same role letters: Sika Ucrete SLB is a Sika system built on Ucrete HS24 NA, while Poly-Crete SLB is a Sherwin-Williams High Performance Flooring system with its own data sheet and build. Specifications and bids should carry the full brand-qualified name, never bare role letters.
Sika published the Ucrete SLB System Data Sheet in November 2025 (Version 01.01), making it one of the newest entries in the US Ucrete line. The role predates the name: the legacy Sikafloor PurCem SLB system sheet from March 2021 documented the same broadcast build on the base product now published as Ucrete HS24 NA.
Both systems run on Sika Ucrete HS24 NA at 80-160 mils; the difference is the wearing surface. Ucrete SL finishes as a smooth, easy-to-clean self-leveler with medium slip resistance, while Ucrete SLB takes a Sikafloor-508 aggregate broadcast and a Ucrete TC31 NA topcoat for a textured surface where wet-floor traction governs.
The nominal band is 80-160 mils (2-4 mm), with 80 mils as the documented minimum. When the system serves as the base layer of a moisture vapor tolerant build, the Ucrete HS24 NA layer must reach at least 125 mils before any aggregate broadcast, per the November 2025 system sheet.
Sika hosts the current Ucrete SLB System Data Sheet (November 2025, Version 01.01) in the system-sheets library on usa.sika.com, and this page links it directly above. Pull the live revision before specifying; system sheets carry their version number and date in the header.
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