MasterSeal SL 1 one-component elastomeric, self-leveling polyurethane sealant

Formerly: Sonolastic SL 1

MasterSeal SL 1 description:

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 for MasterSeal SL 1 sealant:

  • 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 ±35% 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

US / Canada Product Information

Data Guide

Data Guide (French)

Data Guide (Spanish)

Certification Letter

LEED Letter

LEED v4 Letter

Color Reference - MasterSeal SL 1

Color Reference - MasterSeal Single Component

Safety Data Sheets (SDS):

MasterSeal SL 1

MasterSeal SL 1 - Gray

MasterSeal SL 1 - Limestone

MasterSeal SL 1 - G Prepolymer

MasterSeal SL 1 - LTB Prepolymer

Direct contact

Master Builders Solutions Technical Support

Construction Systems


Safety Data Sheet (SDS)

Find all available safety data sheets for this product.

Product Certifications

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Related Literature

Certification Letter

pdf (55.36 Kb)

Color Reference

pdf (89.38 Kb)

Data Guide

pdf (109.24 Kb)

Data Guide (French)

pdf (147.34 Kb)

Data Guide (Spanish)

pdf (131.40 Kb)

Joint Sealants Brochure - Spanish

pdf (749.31 Kb)

LEED Letter

pdf (74.21 Kb)

LEED v4 Letter

pdf (69.99 Kb)

Sealant Performance Selection Guide

pdf (872.11 Kb)