SL-175™
Premium Self-Leveling Underlayment & Wear Layer
Product overview
SL-175 is a premium, cement-based, self-leveling underlayment designed to create a smooth, flat, or level surface before installing floor coverings. Its long working time, low shrinkage, and superior leveling properties make SL-175 the ideal choice for demanding applications on, above, or below grade. This versatile product ensures a high-quality finish, making it perfect for both renovation and new construction projects. Choose SL-175 for reliable and efficient floor preparation, ensuring a seamless installation of various types of floor coverings.
Geographic availability
- Canada
- United States
Available sizes
50 lb bag
Smart Advantages
Install from 1/8" to 2" neat
Walkable in 1 to 2 hours
Install floor covering in 6-16 hours
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TDS
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SDS
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3-Part Specifications
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Floor Score Certification Registration SCS-FS-08384
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SL-175 Health Product Declaration
Latest news
Jan
20
2026
Bostik Brings Next-Level Flooring Innovation to Surfaces 2026
Layered with Innovation. Sealed with Experience.
Bostik will showcase ...
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Bostik will showcase ...
Apr
14
2025
Bostik to Showcase Tailgate-Themed Booth and Innovative Flooring Solutions at NWFA Expo 2025
Bostik is excited to announce its participation in the National Wood Flooring Association (NWFA) ...
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Next events
Bostik SL-175 is also a durable wear layer when a natural concrete look is desired. Topical stains, dyes and surface treatments further expand the decorative possibilities.
Product Features
- Fast return to service; walkable in just 1-2 hours
- Can be installed from 1/8" - 2" neat and to 5" properly extended
- Maintains healing and pour merging properties for up to 20 minutes
- May be pigmented with topical stains, dyes or surface treatments
- Mold and mildew resistant
- Ideal for pumping applications
- Can be used as an underlayment or wear layer
- Can be left open to normal construction traffic
- Contributes points to LEED® certified projects
- Can be installed over “green concrete” for early construction phase applications
- Can be feather-edged to meet existing elevations
- High performance, calcium aluminate formulation
- 21% recycled content
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