Sika Sikaflex SL 1 Limestone 30oz Cartridge

Sikaflex 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.

Movement capability of ±35% allows expansion and contraction
Abrasion resistant to provide for longer wearing and durability
Self-leveling sealant, no tooling needed

$19.85

Availability: Out of stock

SKU

20694

Sika Sikaflex SL 1 – Self-Leveling Polyurethane Joint Sealant

Sika Sikaflex SL 1 is a one-component, self-leveling polyurethane sealant formulated for horizontal expansion and control joints in concrete floors, decks, and industrial surfaces. This elastomeric sealant features ±35% movement capability and exceptional durability, making it ideal for areas with frequent joint expansion and contraction. Sikaflex SL 1 offers easy application, requires no tooling, and bonds well to most common substrates without the need for primer. Its abrasion resistance, weatherability, and compatibility with plaza decks, sidewalks, and parking structures make it an excellent solution for commercial and residential horizontal joint sealing applications.

Key Features:

Self-leveling, one-component polyurethane sealant
±35% movement capability for dynamic joint expansion and contraction
Excellent adhesion to concrete and metal substrates
No tooling required – pourable application
Abrasion-resistant for long-lasting joint protection
Performs in a wide temperature range: -40°F to 180°F
Resistant to UV, weathering, and environmental exposure
Available in limestone and gray; various cartridge sizes

Applications:

Expansion and control joints in concrete floors
Parking decks and driveways
Plaza decks and sidewalks
Industrial and commercial floors
Pitch pans and plaza areas
Horizontal joints exposed to weather and traffic

Technical Specifications:

Property	Value
Chemical Base	Polyurethane (moisture cure)
Shore A Hardness	25 (ASTM C661)
Tensile Strength	300 psi (ASTM D412)
Elongation at Break	800% (ASTM D412)
Movement Capability	±35% (ASTM C719)
Service Temperature Range	-40°F to 180°F
Skin Time	Within 24 hours
Full Cure	Approximately 1 week
Colors Available	Limestone, Gray

Frequently Asked Questions:

Is Sikaflex SL 1 suitable for exterior applications?
Yes, it is designed for both interior and exterior horizontal joint sealing.

Can it be used in joints wider than 1.5 inches?
No, for joint widths greater than 1.5 inches, Sikaflex SL 2 should be used instead.

Is a primer required before application?
Priming is generally not required except for joints subject to periodic water immersion, where Sika Primer-173 is recommended.

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