- Current Name: Sika Ucrete SLB+ (System Data Sheet, November 2025, Version 01.01)
- Former Names: None — November 2025 system designation; base product Ucrete HS22 NA carries the Sikafloor-22 NA PurCem legacy
- 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 cementitious polyurethane broadcast slurry on Sika Ucrete HS22 NA
- System Build: Ucrete HS22 NA slurry with Sikafloor-508 aggregate broadcast, 188-250 mils; Sika Ucrete TC31 NA topcoat, 15-20 mils
- Thickness: 3/16" to 1/4" (188-250 mils) nominal; 3/16" (188 mils) minimum
- Finish: Solid color, broadcast texture; standard Sika Ucrete colors
- 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: 80-85, system value (ASTM D2240)
- Compressive Strength: 5,657 psi at 28 days (ASTM C579)
- Impact Strength: 5.02 ft-lb at 1/8" thickness (ASTM D2794)
- Tensile Adhesion: greater than 400 psi (ASTM D7234)
- Flexural / Tensile Strength: 2,790 psi (ASTM C580) / 944 psi at 28 days (ASTM C307)
- 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 Installer, installing the full Sika Ucrete line since 1999
Phone: +1 (844) 687-1961
Sika Ucrete SLB+ is the heavy build of Sika’s self-leveling broadcast pair: a solid-color cementitious polyurethane slurry engineered with Sika Ucrete HS22 NA at 3/16 to 1/4 inch (188-250 mils), broadcast with Sikafloor-508 aggregate and sealed with Sika Ucrete TC31 NA. Sika’s November 2025 system data sheet positions it for aggressive environments — food processing plants, freezers and coolers, dairies, breweries, wineries, distilleries, and pharmaceutical facilities. Ucrete SLB+ and its thinner sibling Ucrete SLB are Sika systems; Sherwin-Williams Poly-Crete SLB is a different manufacturer’s system that happens to share the role letters; its data sheet is linked under Key Specifications below. Craftsman Concrete Floors is a Sika Certified Installer. The company installs the full Sika Ucrete line nationwide.
The plus is structural, not cosmetic. Against Ucrete SLB, the 80-160 mil system on Ucrete HS24 NA, Ucrete SLB+ switches the base product to Ucrete HS22 NA and more than doubles the minimum build. Its sheet documents an impact strength of 5.02 ft-lb (ASTM D2794) and steam cleanability across the full 3/16 to 1/4 inch thickness. The pattern matches the smooth pair: Ucrete SL+ is the HS22 NA counterpart to Ucrete SL, and Ucrete SLB+ stands in the same relationship to Ucrete SLB on the broadcast side. Service range runs -40°F to 248°F, with thermal cycling absorbed because the slurry’s coefficient of thermal expansion sits close to concrete’s.
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What the Plus Changes: Base Product, Build, and Duty
Sika published the Ucrete SLB+ and Ucrete SLB system sheets together in November 2025, and the pair is easy to conflate from the names alone. They differ in base product, thickness, and duty. The figures below come from the Ucrete SLB+ System Data Sheet (Version 01.01) and Sika’s current Ucrete family documentation; where this page compares against Ucrete SLB, the values match that system’s own sheet.
Sika Ucrete SLB+ vs Ucrete SLB — Base Product and Build
Both systems share the broadcast architecture: a self-leveling slurry, Sikafloor-508 aggregate cast into the wet material at 0.15 lb per square foot, and a Sika Ucrete TC31 NA seal at 15-20 mils, with Sikafloor-2570 WB as the optional primer and Sikafloor-521 with the Sikafloor Urethane Pigment Pack as the documented alternate top coat. The differences sit underneath. Ucrete SLB runs Ucrete HS24 NA at 80-160 mils; Ucrete SLB+ runs Ucrete HS22 NA at 188-250 mils. Coverage tells the duty story plainly: a slurry kit spreads about 107 square feet at 80 mils on the thinner system, and about 31 square feet at 3/16 inch here.
The 85°F Application Ceiling Is the Scheduling Detail to Catch
Application temperature is the operational catch worth flagging: the November 2025 sheet caps ambient and substrate at 40-85°F, fifteen degrees tighter than the Ucrete SLB ceiling, which matters when pours land in unconditioned summer space. Moisture is the opposite story. The system goes down on green concrete at typically 7-10 days, over partially cured slabs reading above 4% surface moisture on a Tramex CME-type meter, and on substrates measuring under 100% relative humidity per ASTM F2170. Surface prep runs to ICRI CSP 3-6 on concrete at 3,625 psi compressive minimum, and every free edge (perimeter, gutters, drains) anchors into a groove cut at twice the floor thickness.
Freezer-to-Washdown Duty in Sika’s Named Verticals
Sika’s uses list for Ucrete SLB+ reads like a washdown roster: food processing plants, wet and dry process areas, freezers and coolers, dairies, breweries, wineries, distilleries, laboratories, chemical process plants, and pharmaceutical facilities. The chemistry backs the list. The slurry resists a wide range of organic and inorganic acids, alkalis, amines, salts, and solvents, holds its physical characteristics from -40°F to 248°F, and takes steam cleaning at the full installed thickness. Under impact it behaves plastically, deforming rather than cracking or debonding, with the sheet’s 5.02 ft-lb ASTM D2794 impact rating, tested at 1/8 inch. The same document states the system meets USDA requirements for use in food plants.
Spec Guidance — A New Name on a Mapped Base Product
Ucrete SLB+ entered Sika’s US library in November 2025 alongside Ucrete SLB. A distributor-archived Sikafloor PurCem SLB+ system sheet suggests the role carried PurCem-era naming as well, though no current Sika document states that lineage, so the confirmed line runs through the base product. Ucrete HS22 NA is the current name for the self-leveling slurry role Sika documented as Sikafloor-22 NA PurCem, so a PurCem-era specification calling for that slurry in a heavy broadcast build points here; verify the role match against the November 2025 sheet before substituting. Write the name brand-qualified in every document: Ucrete SLB+, or Ucrete SLB Plus where the character set cannot carry the plus sign. Bare role letters collide with a Sherwin-Williams system.
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Frequently Asked Questions
Sika Ucrete SLB+ is a solid-color, self-leveling cementitious polyurethane broadcast system engineered with Sika Ucrete HS22 NA at 3/16 to 1/4 inch (188-250 mils). Aggregate is broadcast into the wet slurry and sealed with Sika Ucrete TC31 NA, and Sika positions the system for aggressive environments from food processing plants to freezers, dairies, and breweries.
Base product and build. Ucrete SLB+ runs Sika Ucrete HS22 NA at 188-250 mils; Ucrete SLB runs Ucrete HS24 NA at 80-160 mils. Both broadcast Sikafloor-508 aggregate and seal with Ucrete TC31 NA, so the wearing architecture matches while the plus version carries more than twice the minimum thickness for heavier duty.
They are unrelated systems from two manufacturers that independently landed on the same role letters. Sika Ucrete SLB+ and Ucrete SLB belong to Sika’s Ucrete line, while Poly-Crete SLB belongs to Sherwin-Williams High Performance Flooring with its own data sheet, so specifications should always state the full brand-qualified name.
The November 2025 system sheet sets the nominal band at 3/16 to 1/4 inch (188-250 mils), with 3/16 inch as the minimum. Steam cleanability is documented across that full thickness range, and the system holds its physical characteristics from -40°F to 248°F.
Sika’s documented uses cover food processing plants, wet and dry process areas, freezers and coolers, dairies, breweries, wineries, distilleries, laboratories, chemical process plants, and pharmaceutical facilities. The sheet also states the system meets USDA requirements for use in food plants.
The current document is the Sika Ucrete SLB+ System Data Sheet, November 2025, Version 01.01, hosted in the usa.sika.com system-sheets library and linked above on this page. Check the header date against the live revision before specifying.
Craftsman Concrete Floors installs the Sika Ucrete line. In-house W-2 crews mobilize nationwide, with industrial flooring project history since 1999 across the verticals this system targets, including dairy, brewery, cold storage, and food processing facilities.
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