POURTHANE SL is a premium, self-leveling polyurethane joint sealant designed for sealing horizontal concrete joints. This one-component, moisture-curing formula offers long-lasting flexibility and excellent adhesion, even on damp or green concrete. It delivers reliable performance in sidewalks, plazas, parking decks, warehouses, and airfields—anywhere durable, watertight sealing is needed.

The non-bubbling, low-VOC formulation resists fuels, weathering, and movement up to ±25%. POURTHANE SL applies easily without mixing, levels itself smoothly, and maintains permanent elasticity under changing conditions. It meets ASTM C920 and other key performance standards, making it a trusted choice for professional-grade concrete joint sealing.

POURTHANE SL is an elastomeric, one-component, self-leveling, non-bubbling, premium-grade polyurethane sealant specifically developed to be used as a multi-purpose horizontal joint sealant.  The product is a moisture cure sealant with excellent adhesive properties and resistance to aging and weathering.

USES

POURTHANE SL is used to seal horizontal joints in concrete, such as sidewalks, balconies, pavement, terraces, warehouses, factories, civil structures, plazas, and runways. POURTHANE SL may also be used as a pitch pan sealant.

FEATURES/BENEFITS

• One-component, no mixing.
• Self-leveling.
• Non-bubbling formula can be applied in green or damp concrete.
• Movement capacity of +/-25%.
• Accelerated curing.
• Highly resistant to fuels, including jet fuel.
• Resistant to incidental exposure to ethanol.
• Permanently elastic.
• High durability.
• Resists aging and weathering.
• Excellent adhesion.
• Convenient, easy-to-use packaging.
• Low VOC content.