How to Seal Cracks in Concrete with Sikaflex Crack Flex
Cracks in concrete are inevitable and can cause various problems, such as water leakage, structural damage, aesthetic issues and reduced durability. Fortunately, there is a simple and effective way to seal cracks in concrete with Sikaflex Crack Flex, a one-component, textured, self-leveling polyurethane sealant that can handle horizontal crack movement and resist weathering. In this article, we will show you how to use Sikaflex Crack Flex to seal cracks in concrete and enjoy its benefits.
What is Sikaflex Crack Flex?
Sikaflex Crack Flex is a product of Sika, a global leader in specialty chemicals for construction and industry. It is a high-performance sealant that can seal cracks up to 1 inch wide in concrete and cementitious slabs, such as driveways, garages, sidewalks, balconies, pavements, terraces, decks, walkways and steps . Some of the features and advantages of Sikaflex Crack Flex are:
It is easy to use and apply. You do not need to mix anything, just use a standard caulk gun to apply the sealant on the crack. It is self-leveling and textured to blend with the concrete surface.
It is flexible and elastic. It can accommodate crack movement up to 25% of the original crack width. It also has excellent adhesion and bond strength to most substrates.
It is waterproof and durable. It can withstand water immersion after curing and resist aging and weathering. It can also be painted with water-based, oil-based or rubber-based paints.
It is compatible with green and wet concrete. You can apply it on new concrete 24 hours after cure or on wet concrete 1 hour after the water source has stopped. This saves you time and hassle.
How to Use Sikaflex Crack Flex?
Using Sikaflex Crack Flex is simple and straightforward. Here are the steps you need to follow:
sikaflex crack flex
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Clean the crack and the surrounding area. Remove any loose or deteriorated concrete, dirt, dust, oil, grease or other contaminants that may affect the adhesion of the sealant. You can use a wire brush, a vacuum cleaner or a pressure washer for this purpose.
Prepare the crack for sealing. If the crack is deeper than 1/2 inch, you need to use a backer rod or a bond breaker tape to prevent three-sided adhesion and allow for proper sealant movement. Insert the backer rod or tape into the crack until it is about 1/4 inch below the surface.
Cut the nozzle of the sealant cartridge at an angle of 45 degrees and insert it into a caulk gun. Pierce the inner seal of the cartridge with a nail or a wire.
Apply the sealant into the crack in a continuous bead, slightly overfilling it. Do not tool or smooth the sealant as it will self-level.
Let the sealant cure for at least 24 hours before exposing it to traffic or water. The curing time may vary depending on the temperature and humidity conditions.
Conclusion
Sikaflex Crack Flex is a great solution for sealing cracks in concrete. It is easy to use, flexible, waterproof and durable. It can also be applied on green and wet concrete, saving you time and hassle. If you have cracks in your concrete slabs, try Sikaflex Crack Flex today and see the difference. 06063cd7f5
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