FAQ'S
When using SikaLatex R Concrete Bonding Adhesive, replace the amount of water typically used with the bonding adhesive instead. If you typically use 4 quarts of water, use 4 quarts of SikaLatex R instead. No water is needed.
No, Sikaflex Concrete Fix will not harm animals after the product has reached a full cure. Please allow 5 to 7 days for the sealant to fully cure before proceeding with your project. The cracks must be a minimum of 1/4 inch x 1/4 inch. Sikaflex+ Concrete Fix remains flexible to allow for movement and cures to a flexible, elastic finish.
If the joint is deep or very narrow (past the 1/2 inch depth limitation), the sealant will travel down, pushing air out. Most bubbles will pop, but if they reach the surface when the sealant is "skinning" over, they will not burst. It is highly recommended to keep the cartridge nozzle in the sealant while dispensing the product to avoid the occurrence of these air bubbles. To improve the aesthetics, you can apply another layer of Sikaflex Crack Flex Sealant on top to hide the voids.
No, for this application, you would not need to prime the walls.
Yes, you can use Sikaflex+ Crack Flex Sealant for your application. Please note that if the hydrostatic pressure is great, the sealant may fail. This would be the result with any sealant. The minimum depth and width requirement of the crack must be at least 1/4" x 1/4". If the crack does not meet this requirement, you can use a chisel and hammer to widen it. Properly prepare the crack before applying the sealant.
Sikaflex+ Crack Flex Sealant will take 3 to 5 days to cure, but typically it cures faster. Sika has found that oil, water, and rubber based paints work the best, but testing is always recommended since there are so many different variations. Sika recommends painting a small area to initially test the paint. Do not use paints that are silicone based paints or paints with high solvent content. Paint manufacturers should be contacted for compatibility recommendations. They would know the surfaces which are approved to bond to. Sikaflex+ Crack Flex Sealant is a 100% polyurethane sealant.
You can use Sikaflex+ Crack Flex Sealant for your application. Please note that if the hydrostatic pressure is great, the sealant may fail. This would be the result with any sealant. The minimum depth and width requirement of the crack must be at least 1/4" x 1/4". If the crack does not meet this requirement, you can use a chisel and hammer to widen it.
If the joint is deep or very narrow (past the 1/2” depth limitation), the sealant will travel down pushing the air out. Most bubbles will pop but if they reach the surface when the sealant is "skinning" over, they will not. It is also recommended to keep the nozzle in the sealant while dispensing. You can apply another layer of Sikaflex Crack Flex Sealant on top, to hide the voids.
No, Sikaflex+ Crack Flex Sealant is not recommended to be used on a slope. Sikaflex Crack Flex Sealant is for horizontal applications only.
All coating must be removed and there must be a clean and sound concrete surface.
SikaLatex R Concrete Bonding Adhesive and Fortifier will improve adhesion to the substrate. The density is also improved which helps to prevent cracking and improves the weathering characteristics.
Both perform well for tuck pointing. Both products are textured; however, Sikaflex Mortar Fix is lighter in color, and Sikacryl PowerSet Instant Concrete has a faster cure time. Sikaflex Mortar Fix cures to a flexible rubber finish, while Sikacryl PowerSet Instant Concrete cures to a hard material.
No, Sikaflex+ Crack Flex Sealant is not recommended to be used on a slope. Sikaflex+ Crack Flex Sealant is for horizontal applications only.
In 68F-77F temperatures, Sikacryl PowerSet Instant Concrete will gel in 4 minutes and it will be fully cured in 40 minutes.
Sikaflex+ Crack Flex Sealant is textured, while Sikaflex+ Self-Leveling Sealant has a smooth finish. Sikaflex+ Self-Leveling-Sealant is designed for joint applications, while Sikaflex Crack Flex Sealant is more suitable for cracks.
Eye protection and gloves must be worn at all times during cleanup. If Sikacryl PowerSet Instant Concrete is still soft, Xylene or MEK can be used, but be careful since these are solvents. If Sikacryl PowerSet Gap Filler is hard, then mechanical preparation is needed. This can be a grinder or a chisel and hammer, for example. This product has a fast reaction time, so it will not stay unreacted for very long. In 68F - 77F, it will gel in 4 minutes and it will be fully cured in 40 minutes.
Sikacryl PowerSet Instant Concrete is a 2 component product packaged nicely into a cartridge. It comes with 2 mixing nozzles.