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🔧 Seal smart, last long — the ultimate fix for flawless concrete!
SIKA Sikaflex Concrete Fix is a paintable polyurethane sealant designed for durable, elastic sealing of cracks and joints in concrete, brick, stucco, and metal. It offers ±35% joint movement flexibility, waterproof protection, and meets federal standards, making it ideal for professional-grade weatherproofing and repair applications.













| ASIN | B000UVHN86 |
| Best Sellers Rank | #6,278 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Concrete |
| Brand | SIKA |
| Brand Name | SIKA |
| Color | Gray |
| Compatible Material | Brick, Concrete, Metal |
| Customer Reviews | 4.4 out of 5 stars 958 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 |
| Part Number | 187783 |
| Style | Cartridge |
| Style Name | Cartridge |
| Surface Recommendation | Window |
| UPC | 033886002639 033886093927 |
| Unit Count | 10.1 Fluid Ounces |
| Water Resistance Level | Waterproof |
C**0
Great sealer for stucco
Worked well with stucco and cinder block home.Husband had to close 2 holes on our home.Filled crack with no problems, no mess, easy to use.Great value for money.Would highly recommend..
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.
C**L
Great stuff but expensive.
Great stuff but a bit expensive.
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.
J**H
Easy to use
Very easy to use and helps Ina. Crack that could continue to spread.
P**7
Phenomenal sealant!!
Excellent product for concrete repair. You can apply it to wet surfaces or concrete that hasn't cured. This has an elastic bonding property that will allow it to fill and also flex when hot or cold.
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!
B**T
Look at the date code before you use this product - one dried out and not usable.
Bought 3 - 1 was past date code and dried out. The the other 2 work great. Now I am short 1 to finish my project. Now I have to figure out it I want to go through the trouble of returning the bad one or eating the cost.
M**C
Looks ok
Did not use it yet as it is too cold So i cannot say whether is good or bad.
G**A
Sika sellador
Sellador, facil de usar, excelente calidad y precio
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.
F**.
Bien!!!
Tal cual se describe el producto funciona , sella super bien .
K**G
Easy to apply.
So far it seems good. I have to see how the winter affects it.
Trustpilot
2 months ago
5 days ago