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Continue ShoppingBostik SL-100 UNDERLAYMENT
- $24.99
Bostik SL-100 UNDERLAYMENT
- $24.99
Bostik Self-Leveling Underlayment Systems
SL-100™
A cement-based self-leveling underlayment engineered to create smooth, flat, and level surfaces before the installation of compatible floor coverings.
SL-100™ combines extended working time, low shrinkage, flexible installation thickness, and professional leveling performance for residential, commercial, renovation, and new-construction projects.
Product Highlights
Material Type
Cement Based
Self-leveling underlayment
Thickness
1/4"–3"
Up to 5" when extended
Working Time
Approx. 25 Min.
Healing and pour merging
Walkable Time
2–3 Hours
Approximate return to foot traffic
Product Features
Extended Working Time
Maintains healing and pour-merging properties for up to approximately 25 minutes.
Fast Return to Service
Walkable in approximately 2 to 3 hours after installation.
Flexible Installation Thickness
Can be installed from 1/4 inch to 3 inches neat and extended up to 5 inches.
Pump or Barrel Mixing
Suitable for professional pumping applications and traditional barrel-mixing methods.
Featheredge Capability
Can be feathered to meet existing elevations and create smoother floor transitions.
Mold and Mildew Resistant
Formulated to support durable floor preparation performance in compatible interior applications.
Low-Shrinkage Formula
Designed to create smooth, flat surfaces while helping limit shrinkage during curing.
Construction-Traffic Durability
Can remain exposed to normal construction traffic for up to 12 months.
Performance & Specifications
Application Performance
Application Thickness
1/4"–3" Neat
Extended Thickness
Up to 5"
Working Time
Approximately 25 Minutes
Walkable Time
Approximately 2–3 Hours
System Compatibility
Traffic Exposure
Up to 12 Months
Adhesive Compatibility
Adhesives Approved for Concrete
Recycled Content
21%
Concrete Compatibility
Green Concrete
Recommended Applications
Commercial Renovations
Creates smooth, level surfaces across commercial floor areas before compatible finish-floor installation.
Residential Floor Preparation
Suitable for apartments, homes, condominiums, and residential renovation projects.
Wood and Resilient Flooring
Creates a flat substrate before compatible hardwood, LVT, tile, carpet, and resilient flooring systems.
Concrete Surface Correction
Helps correct uneven floors, variations in elevation, and surface imperfections.
Renovation Projects
Provides dependable leveling performance where immediate next-day floor-covering installation is not required.
New Construction
Suitable for professional floor preparation in new residential and commercial construction.
Product Image
Product Resources
Technical Data Sheet
SL-100™ Technical Data Sheet
Safety Data Sheet
SL-100™ Safety Data Sheet
Project Specifications
SL-100™ 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.
Important: Review the current Bostik Technical Data Sheet before installation. Confirm substrate suitability, primer requirements, preparation method, mixing instructions, aggregate-extension requirements, application thickness, curing conditions, and floor-covering installation times.