SIKASealant - Sikaflex Concrete Fix - Limestone - Elastic sealant for Cracks and Joints - Paintable Polyurethane - 299 ml

I bought the Sika Flex Fix to repair some cracks and external joints and it left me very impressed with the results. It is an easy-to-apply product with a standard caulker gun, it has good consistency and adheres very well to different surfaces such as concrete, stone and brick.I really liked that it is paintable, which makes it easier to leave a more aesthetic finish after drying. The limestone color combines well with light surfaces without the need to paint, if you want to leave it as it is.Another strong point is its elasticity: after drying it maintains some flexibility, ideal for areas that may have movement or expansion with climate changes. I have used it both indoors and outdoors and it has remained firm, without cracking or detaching.Very good performance per tube (10.1 oz liquid) and with a single application I achieved a clean and resistant seal. I will definitely buy it again for future projects. Highly recommended!

Durable product, color does match as advertised, thickness is very thick, does seal concrete as advertised great, easy to use load in gun and proceed with project, recommend size now my personal opinion is for a smaller project due to does not last forever will possibly need more then one tube but is very strong, durable to weather conditions and I would recommend

It works, but has an extremely large nozzle that wastes material.

Used to fill a crack on my front porch step, where the brick step meets the concrete porch. First cleaned the crack out with a wire brush. Second vacuumed the remaining dust and debris. Third applied masking tape to the outside of the area to be caulked for clean lines. Fourth applied with a standard caulk gun. Fifth pushed product into crack with my finger, recommend using nitrile gloves. Sixth added more product with caulk gun. Seventh smoothed to my liking with finger. Eighth waited thirty minutes and removed masking tape. A few weeks later I’m happy with the product, thick enough to fill in the crack very well, seems flexible, color is close enough to brick mortar for my liking.

Product worked good.

We have used this Silka Concrete fixer to fill in the expansion joints around our sidewalks and driveway. We first cleaned out all of the old "caulk" and debris, then applied this new caulk. Because of it's consistency I found that it is so much easier to use with a caulk gun. When you release the trigger and back off the plunger, the caulk stops coming out. This made the job so much easier. I was able to use the back of a plastic spoon the smooth out the caulk.

Seems to work well, but is ridiculously difficult to dispense.

If duct tape had a smarter, stronger cousin who went to trade school and never calls out of work—it would be Sikaflex.I used this stuff to seal a gap in my foundation, and it stuck like it had a personal vendetta against air leaks. It’s thick, weatherproof, and so sticky I’m pretty sure if I dropped it on my driveway, it would become part of the driveway.It cures slow enough that you have time to fix mistakes (thanks for understanding, Sikaflex), but once it sets? Game over, that joint isn’t going anywhere. Wind, rain, time, regret—nothing breaks this bond.Word of warning: wear gloves unless you enjoy explaining to people why your hands look like you lost a fight with a tar pit.Whether you’re sealing cracks, joints, or a DIY mistake you swore you could handle alone—this stuff’s got your back.