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๐ง Seal Smart, Seal Strong โ The Last Joint Sealant Youโll Ever Need!
Sikaflex 1a is a high-performance, one-component polyurethane sealant designed for durable, flexible sealing of vertical and horizontal joints up to 0.5 inches wide. It offers ยฑ35% joint movement accommodation, strong adhesion without primer, and excellent weather resistance, making it ideal for concrete, masonry, windows, doors, and roofing applications. Packaged in a 20 oz sausage, it cures to a tough, elastomeric finish that resists cracking and tearing, ensuring long-lasting protection and professional-grade results.










| ASIN | B00MH8T1YO |
| Best Sellers Rank | #49,153 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #27 in Polyurethane Adhesives #107 in Urethane Adhesives |
| Brand | SIKA |
| Brand Name | SIKA |
| Color | LIMESTONE |
| Customer Reviews | 4.7 out of 5 stars 17 Reviews |
| Included Components | 20 fl oz Sausage |
| Item Form | Sausage |
| Item Weight | 0.89 Kilograms |
| Liquid Volume | 600 Milliliters |
| Manufacturer | SIKA |
| Material Type | Polyurethane |
| Maximum Gap Fill | 0.5 Inches |
| Model | SIKA-91007 |
| Number of Items | 1 |
| Part Number | 91007 |
| Surface Recommendation | Window |
| Tensile Strength | 1500 Pounds Per Square Inch |
| UPC | 033886003087 |
| Unit Count | 20 Ounce |
| Water Resistance Level | Waterproof |
L**L
Durable and Stays Bonded
Put in a channel drain and sealed to side walk with this product. Adheres nicely and easy to work with and dries fairly quickly. Good concrete joint sealer.
D**E
A good buy!
Happy with the results.
J**A
Superior to latex
This is a much more durable caulk than latex or silicone. Itโs not water-cleanup so youโll want the have a solvent ready to wipe up any messes.
Trustpilot
1 month ago
5 days ago