0033886064514

Sikaflex

Model # 427706

Internet # 203249445

Store SKU # 652010

10 fl. oz. Crack Sealant

$7.48 /each
  • Gradually self levels into crack for a flexible finish
  • Textured to blend with concrete surface
  • Permanently water immersible after cure

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PRODUCT OVERVIEW

Model # 427706

Internet # 203249445

Store SKU # 652010

Sikaflex Crack Flex Sealant is a one part, polyurethane sealant for permanently repairing cracks in horizontal concrete surfaces. It can be used in cracks up to one inch wide and provides long term durability. Its elastic technology formulation allows the sealant to remain flexible and move with the crack.

California residents: see  Proposition 65 information

  • Gradually self levels in the crack
  • Water immersible after cure
  • Forms a permanent watertight seal
  • Textured for added density

Info & Guides

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SPECIFICATIONS

Dimensions
Container Size 
10 oz. 
Product Depth (in.) 
Product Height (in.) 
11.25 
Product Length (in.) 
Product Width (in.) 
Details
Color Family 
Gray 
Drying Time (hours) 
Interior/Exterior 
Interior/Exterior 
Product Type 
Sealant 
Product Weight (lb.) 
1 lb 
Warranty / Certifications
Manufacturer Warranty 
One year from date of installation. 

MORE PRODUCTS WITH THESE FEATURES

Product Type: Sealant
Price: $0 - $10
Brand: Sikaflex
Review Rating: 4 & Up
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19 Questions28 Answers

Customer Questions & Answers

10 fl. oz. Crack Sealant
10 fl. oz. Crack Sealant

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This question is from 10 fl. oz. Crack Sealant
 
3 answers

Should I use this on all my sidewalk expansion joints to stop grass/weeds?

This question is from 10 fl. oz. Crack Sealant
Asked by
Marshfield Wisconsin
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August 18, 2015
Hi,
I have a corner lot, so a lot of sidewalk to take care of. I often get grass and weeds coming up in the expansion joints. Would it be a good idea to pull the weeds, and seal the joints with this? Would there be any downside to that?
Thanks!
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August 20, 2015
Answer: 
Hello, thank you for your inquiry. Before you caulk, you will need a clean and dry joint. Remove all dirt and weeds from the joint. Our Sikaflex Crack Flex (textured finish) or Sikaflex Self Leveling (no texture) can be used, as long as the surface is flat. These products are self leveling so no tooling is required. As per our recommendation, max joint depth should be 1/2", backer rod can be used to Read More
Hello, thank you for your inquiry. Before you caulk, you will need a clean and dry joint. Remove all dirt and weeds from the joint. Our Sikaflex Crack Flex (textured finish) or Sikaflex Self Leveling (no texture) can be used, as long as the surface is flat. These products are self leveling so no tooling is required. As per our recommendation, max joint depth should be 1/2", backer rod can be used to achieve this depth. The maximum joint width can be 1". If you do not have a flat surface, Sikaflex Concrete Fix can be used. This is a non-sag sealant so tooling is required to have a flat/level finish. Have a nice day. Read Less
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Asked by
Asheville, NC
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Home Improvement Profile: DIYer
August 20, 2015
Answer: 
The area I worked on was a concrete pad when entering the garage. When it was poured they did not install expansion joints so a crack developed down the middle. I have tried several products but the crack always broke open allowing water to run under the pad causing potential damage. With Silka the problem as been solved. It was easy to apply, flexible, permanently sealing and leveling out the area. In Read More
The area I worked on was a concrete pad when entering the garage. When it was poured they did not install expansion joints so a crack developed down the middle. I have tried several products but the crack always broke open allowing water to run under the pad causing potential damage. With Silka the problem as been solved. It was easy to apply, flexible, permanently sealing and leveling out the area. In your case, I would kill the weeds with a good product from Home Depot. Expansion joints are added to keep the concrete from cracking. Read Less
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Asked by
Chesterfield VA
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Home Improvement Profile: DIYer
August 20, 2015
Answer: 
No downside, but expensive and a lot of work when compared to a bottle of pre-mixed vegetation killer [which is what I use for that purpose].
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This question is from 10 fl. oz. Crack Sealant
 
2 answers

Can it be used on a stained concrete floor?

This question is from 10 fl. oz. Crack Sealant
Asked by
Harlem, GA
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March 1, 2016
We stained concrete floors in our home. We need to seal a crack. Will this product work? and can it be stained over?
Thank You
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March 3, 2016
Answer: 
Sikaflex Crack Flex is a excellent product for repairing cracks. Staining sealants in general is tricky. Some stains have the ability to stay on the surface while others do not. Before the sealant can be stained, it must have a full cure (3 - 5 days).
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March 2, 2016
Answer: 
Yes, this can be used on stained concrete. However you may need to restain the area.
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This question is from 10 fl. oz. Crack Sealant
 
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Can this product be used to repair cracks on cool deck surface and can it be painted without showing through the cool deck paint?

This question is from 10 fl. oz. Crack Sealant
Asked by
Tampa, FL
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February 14, 2016
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February 17, 2016
Answer: 
This can be used and painted after it has dried.
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February 16, 2016
Answer: 
Hello and thank you for your question. This product can be painted once it has fully cured which is 4-7 days, depending on temperature and humidity levels. Oil/Rubber/Water based paints are preferred.
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Is this a polyurethane sealant? I will be using it to seal against radon .

This question is from 10 fl. oz. Crack Sealant
Asked by
Central Pa.
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February 5, 2016
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February 11, 2016
Answer: 
Yes, this product has a polyurethane sealant.
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February 8, 2016
Answer: 
Yes it is a polyurethane sealant but it has not been tested for radon reduction. Sikaflex Construction Sealant has been seen to reduce radon. This sealant is also a polyurethane based product.
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CUSTOMER REVIEWS

Rated 4.6 out of 5 by 21 reviewers.
Rated 5.0 out of 5.0 by Great product Great product! Not sure what to say about it.... it works. Easy to apply using a caulk gun, and it sealed my concrete perfectly. Used it on both the interior and exterior of my basement to prevent leaks. Had it there several months now and haven't seen any leaking. Now I am just trying to fill the minimum required characters because I have nothing more to say about it. December 4, 2015
Rated 4.0 out of 5.0 by fixed my crack I had a big nasty crack in my concrete driveway, I used this product to fill the gap. The directions say to just put it down on the crack with a caulking gun and let it sit. It is self leveling. After the fact I kind wish I would have used a putty knife on it to level it out. It kind has a little pump where the crack was. Look at my pictures and you can see what I am talking about. It seems durable though, and I don't expect it to fall off or anything. All I did for prep was sweep the cracked part of the driveway with a broom. September 25, 2013
Rated 3.0 out of 5.0 by OK but tedious with caulk gun This product performs as advertised. My only complaint is using a caulk gun can make this job slower than it should be job. I used it for expansion joints and it was difficult to do a professional looking job because of the nature of using a caulk gun (unless you use one regularly). I went though 2 tubes of this product before I stumbled across another brand that comes in a 32 oz plastic container. You squeeze it out like wood glue. I simply found the 32 oz container much easier and quicker. It also leveled out quicker than what came in the caulk tube. You may be perfectly fine with using a caulk gun, but I preferred the plastic container with the resealable cap.. It was also much cheaper. March 30, 2014
Rated 4.0 out of 5.0 by Sika seals shallow sidewalk splits Sikaflex flexible sealant is a cinch to use, and provides a nice, durable repair to those smaller cracks that develop in your sidewalk or driveway. I also like that the sealant, once cured, remains flexible, allowing for continued seal, even with seasonal movement of the concrete. A word of caution, however-- Sikaflex does work on cracks up to 1" wide, but only up to 1/2" deep-- a very small window of usability, in my opinion. If the cracks being repaired are deeper than 1/2", then you'll have to find a different product.. For SMALL sidewalk and driveway repairs, I'd recommend this product. August 6, 2013
Rated 4.0 out of 5.0 by Not So Long-Term I use this product to fill the "not-so-hairline" cracks developing in my exposed aggregate driveway. The best feature is its 'self-leveling' attribute ... squeeze it not-too-carefully along the crack and don't mess with it. It 'levels' so well, you'll probably need to go back over the cracks in a day or two. Needs improvement areas: the 'sand' color is too bright for exposed aggregate; its 'plasticity' lasts only a few years after which the normal expansion and contraction on the aggregate will crack the seal and you'll need to reapply. But I haven't yet found a better product. November 13, 2013
Rated 5.0 out of 5.0 by Best In Class - Have Used Sika for 5 Years I've been using this product for over 5 years to seal driveway cracks and it dispenses and holds up much better than 2 similar products I have tried. The competing products are harder to pump out of their cartridges (which is important if you are using a lot of tubes) and they do not have the flexibility and long-term elasticity of the Sika sealant. Be sure when you use this that you first fill the crack with a pre-filler (my favorite is limestone base because it compacts) else you'll waste the sealant down the crevice of the crack, which is expensive. Also, if you live in a cold climate, never let the sealant fill above the level of the concrete, else your snow shoveling equipment will snag it and pull it out. June 4, 2013
Rated 5.0 out of 5.0 by Fix It Once Sealant We have a crack in the concrete pad that connects to our asphalt driveway. I have repaired it several times but it always cracks open again allowing water to penetrate. Sikaflex Crack Flex Sealant has all the features that I need. It is very easy to use, just apply with standard caulking gun, it is textured to blend in, self-leveling and waterproof. This product has elastic technology that allows for crack movement. I'm hopeful that I will never have to fix this crack again. November 29, 2013
Rated 5.0 out of 5.0 by Did the job better I have had issues with basement wall water leaks from all of the rain we've had in GA this summer. I used this product to seal a few porous or cracked concrete wall areas of my basement after trying other polyurethane crack sealers without the sand. It worked well and looks good. This product runs less and looks better than the others without the sand in this application. I also used it for another basement project, sealing the joints where basement walls meet the floors for radon mitigation. September 16, 2013
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