Sikaflex 1a Polyurethane Sealant - 20 Oz Sausage Pack For Concrete & Masonry

Working with concrete or masonry? Sikaflex 1a is the professional-grade sealant that handles the tough jobs! This one-component polyurethane sealant stays exactly where you put it - no sagging on vertical surfaces or running on horizontals. The 20 oz sausage packaging fits standard caulking guns perfectly, making application smooth and efficient. It remains elastomeric after curing, meaning it moves with your structure through temperature changes and settling without cracking or losing adhesion. Perfect for sealing joints in concrete walks, masonry walls, expansion joints, or any place you need flexible, durable weatherproofing. Professionals choose Sikaflex because it just works better - the consistency is perfect, it tools beautifully, and it cures to a tough, reliable seal that lasts for years. This 5-pack means you've got plenty for multiple projects or larger jobs. Whether you're a contractor stocking up or a serious DIYer tackling major projects, this is the sealant you want when failure isn't an option. Works in all seasons and conditions - just follow the application guidelines and you'll get professional results every time.