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Continue ShoppingBostik SL-175 Premium Self-Leveling Underlayment & Wear Layer
Contact us for availability!
Please check refund policy before purchasing.
Bostik SL-175 Premium Self-Leveling Underlayment & Wear Layer
Contact us for availability!
Please check refund policy before purchasing.
Self-Leveling Underlayment & Wear Layer
Bostik SL-175™
A premium cement-based self-leveling underlayment designed to create smooth, flat, and level surfaces before flooring installation, with the versatility to remain exposed as a durable decorative wear layer.
SL-175™ combines long working time, low shrinkage, excellent flow, rapid return to service, and decorative finish versatility for demanding on-grade, above-grade, and below-grade applications.
Product Highlights
Material Type
Cement Based
Calcium aluminate formulation
Thickness
1/8"–2"
Up to 5" when properly extended
Walkable Time
1–2 Hours
Approximate return to foot traffic
Use
Dual Purpose
Underlayment or wear layer
Product Features
Fast Return to Service
Walkable in approximately 1 to 2 hours after installation.
Underlayment or Wear Layer
Can be installed beneath compatible floor coverings or left exposed as a durable wear layer.
Flexible Installation Thickness
Can be installed from 1/8 inch to 2 inches neat and up to 5 inches when properly extended.
Excellent Flow and Leveling
Maintains healing and pour-merging properties for up to approximately 20 minutes.
Decorative Finish Options
May be finished with compatible topical stains, dyes, or surface treatments to create a natural concrete appearance.
Pumping Applications
Suitable for professional pumping applications across larger floor areas.
Mold and Mildew Resistant
Designed to support durable long-term flooring performance in compatible applications.
Green Concrete Compatible
Can be installed over approved green concrete during earlier construction phases.
Performance & Specifications
Application Performance
Application Thickness
1/8"–2" Neat
Extended Thickness
Up to 5"
Working / Healing Time
Up to 20 Minutes
Walkable Time
Approximately 1–2 Hours
System Performance
Primary Use
Underlayment or Wear Layer
Formulation
Calcium Aluminate
Recycled Content
21%
Floor Transitions
Featheredge Capable
Recommended Applications
Demanding Floor Preparation
Suitable for projects requiring smooth, level, durable substrate preparation before flooring installation.
Decorative Wear Layers
Can remain exposed where a durable natural-concrete appearance is desired.
Commercial Projects
Suitable for retail, office, hospitality, healthcare, and other demanding commercial spaces.
Residential Projects
Provides professional leveling performance for homes, apartments, condominiums, and renovations.
Industrial Spaces
Supports durable floor preparation and wear-layer applications in compatible industrial environments.
New Construction & Renovation
Designed for on-grade, above-grade, and below-grade applications in new and existing buildings.
Product Image
Product Resources
Technical Data Sheet
Bostik SL-175™ Technical Data Sheet
Safety Data Sheet
Bostik SL-175™ Safety Data Sheet
Project Specifications
SL-175™ 3-Part Specifications
FloorScore Certification
Registration SCS-FS-08384
Surface Preparation
Bostik Surface Preparation Sell Sheet
Application Tip: Maintain consistent water measurement, mixing time, and placement procedures so adjoining pours merge within the available working time and produce a uniform finished surface.
Important: Review the current Bostik Technical Data Sheet before installation. Confirm substrate suitability, primer requirements, preparation methods, mixing instructions, extension requirements, application thickness, curing conditions, decorative finish compatibility, and floor-covering installation times.