My shopping cart
Your cart is currently empty.
Continue ShoppingBostik SL-Primer
Contact us for availability!
Please check refund policy before purchasing.
Bostik SL-Primer
Contact us for availability!
Please check refund policy before purchasing.
Bostik Surface Preparation Systems
SL-Primer™
A high-solids latex primer designed for use with Bostik self-leveling underlayments and patches over approved porous concrete and exterior-grade plywood substrates.
SL-Primer™ seals porous substrates and helps promote a strong bond between compatible Bostik underlayments, patches, and the prepared subfloor.
Product Highlights
Product Type
Latex Primer
High-solids formulation
Primary Use
Bond Promotion
Supports underlayment adhesion
Substrate Function
Seals Porosity
Helps control absorption
Compatible Systems
Bostik
Self-levelers and patches
Key Features
High-Solids Latex Formula
Formulated as a high-solids latex primer for professional surface preparation before applying compatible Bostik products.
Seals Porous Substrates
Helps reduce excessive substrate absorption to support more consistent application and curing of the underlayment.
Promotes Strong Bonding
Facilitates adhesion between the prepared subfloor and compatible Bostik self-leveling underlayments or patches.
System Compatibility
Designed specifically for use with Bostik’s line of self-leveling underlayments and patching products.
Approved Substrate Types
Concrete
Suitable for use over properly prepared porous concrete substrates before applying compatible Bostik underlayments or patches.
Exterior-Grade Plywood
Can be used over properly prepared exterior-grade plywood where permitted by the selected Bostik installation system.
Recommended Applications
Self-Leveling Underlayments
Prepares approved porous substrates before the installation of compatible Bostik self-leveling underlayments.
Floor Patching Systems
Supports adhesion when used with compatible Bostik patching products over approved substrates.
Subfloor Preparation
Helps create a properly sealed and prepared surface before the placement of cementitious preparation materials.
Porosity Control
Helps limit rapid water loss from fresh underlayments into highly absorbent substrates.
Product Image
Product Resources
Application Tip: Apply primer uniformly over the prepared substrate and avoid puddles or missed areas, as inconsistent coverage can affect underlayment bonding and performance.
Important: Review the current Bostik Technical Data Sheet for substrate preparation, dilution requirements, coverage, drying conditions, approved applications, and compatibility with the selected self-leveling underlayment or patch.