MasterSeal SL 1

One-component elastomeric, self-leveling polyurethane sealant

Formerly: Sonolastic SL 1

How does MasterSeal SL 1 work?

MasterSeal SL 1 is one component, non-priming, self-leveling elastomeric polyurethane designed for expansion joints in concrete floors and decks. Use it where flexibility as well as abrasion and puncture resistance are required.

Recommended uses:

  • Horizontal
  • Interior and exterior
  • Expansion joints
  • Control joints
  • Pavers
  • Plaza decks
  • Industrial floors
  • Driveways/garages
  • Sidewalks
  • Decks
  • Parking structures
  • Pitch pans

What are the unique features of MasterSeal SL 1?

  • Variety of types and sizes of packaging to help reduce jobsite waste
  • Wide application temperature range makes MasterSeal SL1 suitable for all climates
  • Excellent weatherability for long-lasting performance

What are the benefits of MasterSeal SL 1?

  • Movement capability of ±25% allows expansion and contraction with joint movement
  • Abrasion resistant to provide for longer wearing and durability
  • Easy to gun for quick installation
  • No priming needed on most surfaces, offering excellent adhesion
  • Self-leveling, so no tooling needed

Product Information

Data Guide

Certification Letter

LEED Letter

LEED v4 Letter

Safety Data Sheets - Stone

Safety Data Sheets - Gray 

Safety Data Sheets - Limestone