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🔧 Seal smart, stay strong — don’t let cracks steal your edge!
SIKA Sikaflex Concrete Fix is a paintable polyurethane sealant designed for durable, elastic sealing of cracks and joints in concrete, brick, stucco, and metal. Its ±35% joint movement capacity and waterproof formula ensure long-lasting protection against weather and wear. Packaged in a convenient cartridge compatible with most applicator guns, it meets all federal standards for quality and safety, making it the go-to choice for professional-grade weatherproofing and repair.













| ASIN | B000UVHN86 |
| Best Sellers Rank | #5,019 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2 in Concrete |
| Brand | SIKA |
| Brand Name | SIKA |
| Color | Gray |
| Compatible Material | Brick, Concrete, Metal |
| Customer Reviews | 4.4 out of 5 stars 1,002 Reviews |
| Global Trade Identification Number | 00033886002639 |
| Included Components | Crack Filler |
| Item Dimensions | 11.5 x 2 x 11.5 inches |
| Item Form | Paste |
| Item Part Number | 757201 |
| Item Type Name | Crack Filler |
| Item Weight | 16 ounces |
| Item dimensions L x W x H | 11.5 x 2 x 11.5 inches |
| Manufacturer | SIKA CORPORATION |
| Material | Polyurethane |
| Material Type | Polyurethane |
| Model | 187783 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 187783 |
| Style | Cartridge |
| Style Name | Cartridge |
| Surface Recommendation | Window |
| UPC | 033886002639 033886093927 |
| Unit Count | 10.1 Fluid Ounces |
| Water Resistance Level | Waterproof |
W**.
So far so good.
Works well so far. It's kind of a shiny metallic silver color if that matter to you. If it doesn't hold up, I'll update the review. I used it for the space between my garage apron and slab to keep water from running down in-between the two.
R**G
SIKA makes good concrete sealants
This and SIKA’s self leveling sealant both work very well to seal cracks in concrete. I found this easier to work with for thinner cracks than the self leveling sealant, since it is easier to control and stop the flow when not in use. The self leveling version works best when the entire caulk tip fits into the crack and the “flow” of the sealant can spread out into the crack and self level without making a mess. My only complaint is that the limestone color is really a light gray. It’s pretty much the same as the self leveling gray color and doesn’t blend perfectly with the limestone color of most concrete. For this, I would give it 4.5 stars. Tip: A little sand sprinkled and rubbed in after application helps it blend better with the concrete texture and color.
M**L
Concrete Glow-Up in a Tube
Lowkey impressed by this stuff. I slapped it on some crusty, cracked concrete that’s been giving “abandoned mall parking lot” vibes, and bro… it ate. The tube was a little messy (like, you WILL get some on your hands and question your life choices), but once it’s down, it’s locked in like a situationship you can’t escape. The texture? Thick. The hold? Thicker. It cures up solid and smooth, and suddenly my walkway went from “NPC spawn zone” to “main character energy.” Only reason it’s not a 5/5 is because squeezing it out feels like arm day at the gym, but honestly, that’s just the price of greatness. Verdict: Concrete cracks? Consider them ghosted. 4/5, would seal again.
C**E
This is the product to choose!
This product was recommended by our concrete guy as the only one to even both with. Other products do not perform well in application nor do they last like this one. Application was slightly gloppy but in following instructions it worked out well. Tube lasted further than we expected. No color match choices were available so it is too light but our concrete walk is 21 years old we are ok with that. The proof will be in over winter. If I can run my snow shovel over this area without catching & peeling it up I will call it a win. Check back in May!
G**G
Works well
Works very well on concrete
J**N
Worked great!
This stuff really worked.
S**E
Great adhesion
Best polyurethane for concrete ect. I'm using it for concrete sidewalk to pool coping.
J**R
Not worth it
Very difficult to use. Needed two hands on caulking gun to get out ofvthe tube. Used half a tube. I plugged tge tip. Came back later to finish the job. The sealant must have handed. I couldn't get it to come out of the tube. I threw it away and am stuck with 2 tube. Past return date. Live and learn.
M**C
Looks ok
Did not use it yet as it is too cold So i cannot say whether is good or bad.
S**O
Professional grade.
Used this sealant to repair a few cracks around my concrete steps and seal some joints on an exterior wall. The application was straightforward, and the material came out of the cartridge smoothly without making a mess. It adhered very well to concrete and metal surfaces without needing any extra prep work. Once cured, it remained flexible while creating a strong, weatherproof seal. After a few days of rain and temperature changes, everything still looks great with no signs of cracking or shrinking. A durable, professional-quality product that saved me both time and effort on my repair project.
A**O
Calidad
Lo usé para unas ranuras en la pared y funcionó bien, gran calidad de producto
O**R
100.!
A tiempo producto original de alta calidad
T**M
As described
Worked very well
Trustpilot
5 days ago
2 weeks ago