SIKA Sikaflex Crack Flex Sealant - Gray, High-Performance Polyurethane, Self-Leveling, Textured - Waterproof Seal for Horizontal Cracks - 10.1 fl. oz (Pack of 12)
Condition: New
Buy Now, Pay Later
As low as
$16.61
/ mo
Learn more
- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Saturday, Jul 11
Size: 10.1 Fl Oz (Pack of 12)
Features
- TIGHT, WATERPROOF SEALS Sika self-leveling sealant provides an ideal solution for cracks found in concrete pavement, driveways, walkways, terraces, decks, and other horizontal surfaces
- ELASTICITY RESISTS CRACKING AND TEARING Sika pro sealant incorporates a high elasticity that allows for movement between bonded surfaces. This helps prevent damage to the caulk for a better seal
- TEXTURED TO BLEND Colored gray to blend with sidewalks and driveways, this caulk features a special texturing to better match the look and feel of everyday concrete, cement, and similar surfaces
- LONG-LASTING PROTECTION Once cured, the seal is waterproof and water immersible, so rainwater and garden runoff won't hurt it. And, it's formulated to resist weathering and aging too
- LONG-LASTING PROTECTION Once cured, the seal is waterproof and water immersible, so rainwater and garden runoff won't hurt it. And, it's formulated to resist weathering and aging too
Description
If your driveway, sidewalk, balcony, steps, or other concrete or cement surface has cracks or gapping, Sikaflex Crack Flex sealant is the solution you need. This is a one-component, premium-grade polyurethane sealant that, once cured, offers waterproof protection and long-lasting durability. Simply insert the compact cartridge into a standard caulk gun and you're ready to go. The sealant is self-leveling, so there's no need to tool it down or shape it into the crack. And, it's specially textured to better blend with the pavement. The sealant features high elasticity to allow for movement and prevent tearing for a longer-lasting seal.
Material: Polyurethane
Brand: SIKA
Style: Crack Flex Sealant (Pack of 12)
Item Weight: 11.9 Pounds
Item dimensions L x W x H: 8 x 6 x 12 inches
Brand Name: SIKA
Unit Count: 1.0 Count
Global Trade Identification Number:
Number of Items: 12
Part Number: 427706
Model: 515306
Manufacturer: SIKA CORPORATION
Included Components: Sealant
Water Resistance Level: Waterproof
Item Form: Liquid
Compatible Material: Concrete, Metal
Item Weight: 11.9 Pounds
Item Dimensions: 8 x 6 x 12 inches
Style Name: Crack Flex Sealant (Pack of 12)
Color: Gray
Surface Recommendation: Concrete
Material Type: Polyurethane
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Jul 11
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Size: Pack of 1
I bought a house with a cement patio around a pool. There were a few sizable cracks in the cement. The quotes to repair or replace cement ran from 500 to 10k. Got a quote to resurface with rubberized garage floor coating and was quoted 30k. The pool man patched the cracks and a year later the repairs were cracking again. I found this and thought id give it a try. It was easy to apply with a caulk gun, filled in the cracks and dried quickly. Looks much better than the cement patch and seems to be holding up very well.
...
show more
Reviewed in the United States on June 6, 2026 by Cindy S.
Size: Pack of 1
I filled at least 100 foot of cracks in my drive way after using a crack chaser grinding wheel and SIKA flex sealant I have used other brands but for the little extra cost sikaflex sets up faster and dries quicker than 2 other brands I have used which helps to prevent anyone from smearing and tracking wet sealant across the cement.
...
show more
Reviewed in the United States on June 18, 2026 by Donna W.
Size: Pack of 1
OK, it's sika and it's a great sealant. I've used this to seal some cracks along my concrete patio. When i see self-levelling i am typically expecting it to be a little viscous, but able to really seep down into the cracks while also providing a smooth, level finish. I understand if you use too much, it's going to pool, but this is just really too viscous to provide a good level finish. Maybe it's user error, but i feel i did the best i could with the product. Maybe i have the wrong product for this application. Regardless, i feel it needs to be a little less viscous than it is.
...
show more
Reviewed in the United States on March 23, 2026 by Pop ina Bottle
Size: Pack of 1
The gray water tank on my class A RV was smelling terrible. It was getting inside the living area and making everything smell terrible. I couldn’t find a leak anywhere. When I looked at all the connections and the tank, the only thing I could find was how this pipe went into the top of the tank, there was no rubber connection with clamps. That seemed very suspicious to me. It just appeared to be stuck into the top of the tank, and sealed in there with what appeared to be plumbers putty. I called the manufacturer and asked if this was how it was supposed to be. I would purchase a rubber connection if it was available. They said they are still doing it this way and if they have a problem to use a Sikaflex gray compound. I purchased a tube, and although the pipe comes out of the top of the tank I used the self leveling compound. I started applying it above the suspect area and let it flow down over the existing stuff and let it flow onto the top of the tank. It actually made a very nice looking cone shaped seal. By that evening, I could tell the smell was getting better. It’s been about two weeks and you can’t detect it in the RV anymore. I have aired out the basement in the RV and that seems fine now too. I would highly recommend this flexible sealant. It’s amazing how flexible it is and how well it sealed this connection. We suffered with the smell for years until I had checked every fitting and the tank. The only thing left was this connection, but it appeared fine. The crack filling abilities of this self leveling system must have flowed into the source of the problem! Best ten bucks I’ve spent in a long time!
...
show more
Reviewed in the United States on September 1, 2023 by Janine
Size: Pack of 1
This stuff is amazing and absolutely delivers on it's promises! I originally completed this project using the horrible Dap version of concrete filler/seal which was horrible to work with and NEVER set (even after 2 dry 70 degree days) and essentially washed away on 1st rain. I completed the project again with this Sikaflex and it worked perfectly. It completely self levels and fills in the void. The best advice I have is DON'T touch it. Just lay your bead and let it work it's magic. It completely levels and leaves a smooth finish. Then come back and re-fill any voids that may appear. I had used sand then backer rod so I only had one corner spot that needed a little extra fill. I also sprinkle a little of the sand on the still wet seal to add to the concrete look though this Sikaflex already has a nice texture. This stuff has a great look on it's own and I'm so impressed with how well it works and looks. It's now cured and firm, yet pliable to the touch. I should have used this stuff in the first place.
...
show more
Reviewed in the United States on November 9, 2023 Reviewed in the United States on November 9, 2023 by jdubs
Size: Pack of 1
I have a gap about 1" wide between my garage apron and the concrete slab adjacent to it. It looked like it had been filled with something black, maybe tar and it broke up when I ran compressed air over it to clean it up. Certainly not flexible material at this point and already had cracks in it. I had read about this type of "self-leveling" product (which has been used elsewhere in my neighborhood) and decided to give it a try. Although I had some backing, I wasn't calculate how much I would need, so I started with 3 tubes. That got me about 2/3 of the way across the apron - a little better than expected. Not bad for a 1" gap. (Also the slab is tipped 1/2" - 3/4" relative to the apron across it's width so that the edges cross in the middle; water will have to follow the gap ~ halfway to flow onto the slab.) I went to order a couple tubes to finish and in a couple of weeks the price had doubled from $10/tube. Turns out the local Home Depot carries it for around $10. I hadn't worked with this self-leveling product before and it really does flow even more easily than I expected which means your prep has to be pretty good. Although it says it can be "tooled", I had minimal success with that (after 20-30 minutes) - maybe if you work it immediately. I found I had to lay a little less than I thought was needed and go back over it a few minutes to get the level I wanted. There is a little "knack" to using it well, but I got it after using 3 tubes, One thing I did find which is illustarted in the image, when I went back a day later to continue filling the gap, the new material didn't quite blend seamlessly with the day-old material. (See red arrow, and dashed line which traces part of the "seam".) The image exagerates it a bit, but as a perfectionist I notice it. The difefference in height is like 1/16" ... not much frankly. Overall it looks real good to me given the alignment issues. Been in place a few weeks. Interested to see how it fairs over the Western Pennsylvania Winter.
...
show more
Reviewed in the United States on September 24, 2022 Reviewed in the United States on September 24, 2022 by R. A. Dilly
Size: Pack of 1
Jay Fray delivering the balanced truth about this SIKA Sikaflex Crack Flex sealant in gray that provides decent sealing capability with some performance limitations! Purchased this SIKA Sikaflex Crack Flex gray sealant for concrete crack repair and sealing applications on construction projects and foundation maintenance work. The sealant performs decently for basic crack sealing though doesn’t achieve outstanding results. Adhesion quality works adequately with sealant bonding to concrete surfaces reasonably well for standard crack filling applications. The bond proves sufficient for typical residential repair work without exceptional strength. Flexibility appears acceptable with cured sealant maintaining some elasticity allowing minor concrete movement without immediate cracking. The flex capability works for normal expansion and contraction cycles. Application consistency proves workable with sealant that dispenses from tube without excessive difficulty and smooths reasonably well during tooling. The material handles adequately during application process. Curing time meets reasonable expectations with sealant setting within advertised timeframes and achieving usable hardness for protecting sealed cracks from weather exposure. Where this sealant loses stars includes performance that’s merely decent rather than exceptional, coverage rates that require more product than ideal, or durability questions for extreme weather exposure. For basic concrete crack sealing requiring functional repair without premium performance demands, this provides adequate results at reasonable Sika brand pricing. The gray color matches concrete reasonably well making repairs blend acceptably with existing surfaces for typical maintenance applications. For standard crack sealing on residential foundations or concrete surfaces, this delivers workable results when perfect repairs aren’t critical. Jay Fray verdict: Decent crack flex sealant providing adequate concrete sealing for basic repair applications. Functional Sika product that works without delivering exceptional performance!
...
show more
Reviewed in the United States on March 10, 2026 by Jay Fray
Size: Pack of 1
I really like this product. Perfect to seal an edge where concrete meets my house. Starts smoothing out quickly and dries with a nice sheen.
Reviewed in the United States on June 26, 2026 by j