Brands and countries
  • Product

SL-Rapid™

Rapid Setting Self-Leveling Underlayment
TDS SDS Brochure All Documents
Where to Buy
Product overview

SL-Rapid is a rapid-setting, cement-based, self-leveling underlayment designed to create a smooth, flat, and level surface before installing floor coverings. Its rapid-setting properties ensure quick application, while low shrinkage guarantees stability and durability. The superior leveling capabilities of SL-Rapid make it the perfect choice for time-sensitive and demanding projects, whether on, above, or below grade. Ideal for both residential and commercial applications, SL-Rapid is the ultimate solution for professionals seeking efficiency and excellence in flooring preparation.

Geographic availability
  • United States
Available sizes
50 lb bag

Product information

The following product has a new version :
Please consult its associated page by clicking on the button below.
Discover the new product

Smart Advantages

 
Install floor covering in 1 to 4 hours
Install thickness from 1/8" to 1" neat
Up to 40% more fluid than traditional self-levelers

Latest news

Apr 14 2025
  • Wall & Floor
  • Events
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) ...
Read more
nwfa-2025-640x480.jpg
nwfa-2025-640x480.jpg
May 02 2024
  • Wall & Floor
  • News
XL Brands Announces New Distribution Relationship With Intermountain Wood Flooring
Starting May 2, 2024, XL Brands products, a leading brand of professional flooring ...
Read more
xl-brands-press-release_640x480.png
xl-brands-press-release_640x480.png

Next events

bostik-academy-flooring-surface-prep-adhesives_640x480.jpg
Bostik Academy
Flooring Surface Prep & Adhesives
May 14-15, 2025
Bostik Academy - Temecula
27430 Bostik Ct.
Temecula, CA 92590

Presented by Bostik, discover our cutting-edge solutions in surface preparation, sealants, and ...

More information
bostik-hardwood-flooring_640x480.jpg
CEU Webinar: Hardwood Flooring Systems for Durability, Moisture Control, & Sound Reduction
Thursday, May 8, 2025 11:00 AM EDT
Online Webinar

This course reviews best practices for a typical hardwood flooring installation and discusses the ...

More information
bostik-academy-hardwood-in-person-training_640x480.jpg
Bostik Academy
Advanced Flooring Prep & Adhesives
May 1, 2025
BPI - Dallas 
4251 Fleetwood Road
Fort Worth, TX 76155

Presented by Bostik, learn about our innovative surface prep, grout, resilient and hardwood ...

More information
starnet-event-2023_640x480.jpg
2025 Starnet Annual Membership Meeting
April 24, - April 27, 2025
Omni La Costa Resort
2100 Costa Del Mar Road
Carlsbad, CA, 92009

Join Bostik during the Preferred Vendor Trade Show at the 2023 Starnet Annual Meeting

More information

The SL-Rapid’s setting properties mean tile can be installed as quickly as one hour after walkable. Additionally, moisture sensitive floor coverings such as wood, carpet, VCT, vinyl sheet goods, and rubber can generally be installed four hours after walkable.

 

Product Features

  • Fast install for ceramic tile – 1 hour

  • Can be installed from 1/8" – 1" neat

  • Ideal for bucket or barrel mixing applications 

  • Creates a super smooth surface necessary for various floor coverings

  • Maintains healing and pour merging properties for up to 20 minutes

  • Very fast and easy to apply without the imperfections associated with hand patching

  • Highly fluid self-leveler for easy smoothing and pouring 

  • Mold and mildew resistant

  • Contributes points to LEED® Certified Projects

  • High performance, calcium aluminate formulation

Related market & applications

Related products

reno-c200-pro-640x480.jpg (RENO C200 PRO 25 Gal Bag)
reno-c200-pro-640x480.jpg (RENO C200 PRO 25 Gal Bag)

RENO C200 PRO 

  • Product
Economical High Performance, Cement-Based Skimcoat and Screed
Read more
Roll-Cote-1-4-gal_372x279.jpg
Roll-Cote-1-4-gal_372x279.jpg

Roll-Cote™

  • Product
High-Performance Moisture-Vapor-Barrier Coating and Primer
Read more
sl-rapid-self-leveling-underlayment-image_372x240-copy.jpg
sl-rapid-self-leveling-underlayment-image_372x240-copy.jpg

SL-Rapid™

  • Product
Rapid Setting Self-Leveling Underlayment
Read more
bostimat_productsignpost_372x240_0012.jpg
bostimat_productsignpost_372x240_0012.jpg

BostiMat™

  • Product
Fiber Reinforcement Matrix Sheet
Read more
collomix_productsignpost_372x240_0012.jpg
collomix_productsignpost_372x240_0012.jpg

Collomix Mixer

  • Product
Levmix 65 Mobile Mixer
Read more
bostik-d-250-moisture-vapor-barrier-coating-image_372x2402.jpg
bostik-d-250-moisture-vapor-barrier-coating-image_372x2402.jpg

D-250™

  • Product
Moisture Vapor Barrier Coating
Read more
levelingpins_productsignpost_372x240_0012.jpg
levelingpins_productsignpost_372x240_0012.jpg

Leveling Pins

  • Product
A visual guide to ensure consistency and accuracy of pour depths
Read more
mvp4-moisture-cure-urethane-for-wood-floors-image_372x2402.jpg
mvp4-moisture-cure-urethane-for-wood-floors-image_372x2402.jpg

MVP4®

  • Product
Moisture Vapor Protection, Anti-Fracture and Noise Reduction Membrane
Read more
sl-100-self-leveling-underlayment-image_372x240.jpg
sl-100-self-leveling-underlayment-image_372x240.jpg

SL-100™

  • Product
Self-Leveling Underlayment
Read more
bostik-sl-175
bostik-sl-175

SL-175™

  • Product
Premium Self-Leveling Underlayment & Wear Layer
Read more
sl-200_productsignpost_372x240.jpg
sl-200_productsignpost_372x240.jpg

SL-200™

  • Product
Ultra Fluid Self-Smoothing Underlayment
Read more
sl-gyp_productsignpost_372x240_0012.jpg
sl-gyp_productsignpost_372x240_0012.jpg

SL-Gyp™

  • Product
Hybrid Gypsum-Based Self Leveling Underlayment
Read more
sl-primer-self-leveling-underlayment-primer-image_372x240-copy.jpg
sl-primer-self-leveling-underlayment-primer-image_372x240-copy.jpg

SL-Primer™

  • Product
Self-Leveling Underlayment Primer
Read more
self-leveling-toolkit_productsignpost_372x2402.jpg
self-leveling-toolkit_productsignpost_372x2402.jpg

Self Leveling Tool Kit

  • Product
Simplify your Bostik smart adhesive installation
Read more
slab-coteab_productsignpost_372x240_001.jpg
slab-coteab_productsignpost_372x240_001.jpg

Slab-Cote™

  • Product
Extreme Moisture Vapor Barrier Coating
Read more
totalprime-multi-surface-bond-enhancing-primer-image_372x240.jpg
totalprime-multi-surface-bond-enhancing-primer-image_372x240.jpg

TOTALPrime™

  • Product
Multi-Surface Bond-Enhancing Primer
Read more
ultrafinishpro_productsignpost_372x240_0012.jpg
ultrafinishpro_productsignpost_372x240_0012.jpg

UltraFinish™ Pro

  • Product
Premium Portland Cement Repair Patch
Read more
ultraramp_productsignpost_372x240_0012.jpg
ultraramp_productsignpost_372x240_0012.jpg

UltraRamp™

  • Product
Premium Portland Cement Ramping Patch
Read more
universal-primer-pro-self-leveling-underlayment-primer-image_372x240.jpg
universal-primer-pro-self-leveling-underlayment-primer-image_372x240.jpg

Universal Primer™ Pro

  • Product
Deep Penetrating Primer
Read more
bostik-webcrete-95-floor-patch-image_372x240.jpg
bostik-webcrete-95-floor-patch-image_372x240.jpg

Webcrete® 95

  • Product
Fast-Setting, High Strength, Floor Patch
Read more
webcrete98_productsignpost_372x240_0012.jpg
webcrete98_productsignpost_372x240_0012.jpg

Webcrete® 98

  • Product
Premium, Fast-Setting, Polymer-Modified, Portland Cement Patch
Read more
webpatch-d-9001_productsignpost_372x2402.jpg
webpatch-d-9001_productsignpost_372x2402.jpg

Webpatch® D-9001

  • Product
Fast-Setting Polymer-Fortified Gypsum Patch
Read more
Top