Roadware 10 Minute Concrete Mender™ and Easy-injection mixers make full-depth crack repairs in hairline cracks without cutting. This less evasive crack repair technique breaks the rules for concrete repair.
Let’s look at these “rules” one by one.
Broken Rule One: Hairline cracks are often dismissed as not worth fixing. However, it’s important to note that almost every concrete crack starts as a hairline crack. Some of these cracks are so tiny that they are not visible to the naked eye.
Cracking naturally occurs in concrete slabs as the concrete cures and shrinks. We use saw-cut control joints to guide the concrete to crack inside the designated joints, but sometimes the concrete cracks in unexpected places. We wish there were an efficient way to fix hairline cracks, but for now, we generally ignore them and attribute them to the nature of concrete. We might reassure customers by saying, “It will be fine; you still have aggregate interlock, and the crack is just on the surface,” or “All concrete cracks, and it’s just the nature of the product.” Unfortunately, customers who have invested in a new concrete floor are usually dissatisfied with these explanations.
The truth is, we would fix hairline cracks if there were a good and efficient way to do it.
Broken Rule Two: You have to cut open crack if you really want to repair it. A repair material has to actually get into a crack so it will actually do some good. Anything short of that is no better than caulk. For the most part, this is true. We can’t repair what we can’t reach. Traditional cut and cover techniques us a diamond blade saw to open up a crack, forming a shallow well for Concrete Mender to accumulate and flow down into the crack. It works really well, and Roadware has been doing it for over twenty years.
What is needed is a way to actively push repair products into hairline cracks. Roadware 10 Minute Concrete Mender can do the job with simple techniques and Easy Injection Mixers. That brings us to:
Broken Rule Three: Crack injection requires pumps, ports, slow epoxy, and lots of time.
For a successful crack injection repair you need to accomplish three things:
- Delivery of materials to the repair area.
- The repair material needs to set before if flows away from the repair area .
- The repair has to be structurally effective.
The Roadware Easy Injection mixers make it easy to fill cracks as small as 20 mil (0.02 inches) with Concrete Mender. Simply drill a 3/8-inch hole into the crack and then push the almost-water-thin Concrete Mender into the cracks. You can see the Concrete Mender flow along the entire length of the hairline crack. You won’t need expensive injection pumps for this – just a cartridge of Concrete Mender and a manual application gun.
Roadware 10 Minute Concrete Mender starts to thicken and cure in about 5 minutes after application, so the material will stay where you put it. Traditional injection epoxies take hours to cure. In many cases, at the end of the day, the epoxy all ends up under the slab and no longer in the crack.
Roadware 10 Minute Concrete Mender™ with Microdoweling™ penetrates traditional bond lines and repairs concrete from the inside out. This structural polyurethane will not become brittle over time. Epoxy injection resins become very hard and brittle. As the concrete deflects under traffic, the brittle epoxy will start grinding away at the bond-line and the deterioration will start all over again. Roadware 10 Minute Concrete Mender is designed to restore aggregate interlock and deflect with the concrete under heavy traffic and loading. This structural polyurethane will not become brittle over time and is designed to bring the cracked concrete back to original pre-cracked condition.
Getting Started
Im interested in the hairline concrete mender. Have a small crack around my pool deck, price with shipping.
Thanks
Phil
Hello,
We can help you with that. Please fill out our contact form at http://concretemender.com/contact-roadware/ or call Roadware at 800-522-7623.
I have enjoyed reading the information about concreting work. Really, entire discussion is more helpful and all the tips are more effective too. I am very glad to go through this kind of helpful article. Thanks for sharing a nice article.
I am interested in the crack mender can you tell where I can get it and price
Hello, Roadware has distributors in most parts of the USA and the world. Please send me your location and contact information. https://concretemender.com/contact-roadware/
For CMU walls and columns that have hairline cracks possibly due to rebar expansion/corrosion. Does Roadware 10 minute Concrete Mender help with deep penetration and inhibiting such expansion? Any info would be greatly appreciated. Thanks in advance.
Hello,
Concrete Mender could help seal the cracks and help prevent future water intrusion. It will likely slow down further expansion of the rebar. I do not know of any practical process that can stop rebar from expansion completely.
Kelton Glewwe
Roadware
Is the product compatible with epoxy floor coatings?
Hello,
Yes, Roadware 10 Minute Concrete Mender is compatible with most types of floor coatings, primers, stains and paints including epoxy.
Thank you for asking.
Kelton Glewwe
Roadware
How to use Roadware to fits ceiling cracks lines?. Can it be done?. Is Roadware waterproof when cured?. I am interested to test your product for ceiling crack repair and promote your product if its effective on ceiling repairs.
Hello,
I do not recommend Concrete Mender for repairing overhead cracks. It would be difficult to hold this water-thin polyurethane in place while it cures.
I am Pakistan. I want this product 5 pc, kindly provided my complete detail where to here reach product.
Hello Nisar,
Please send your complete contact information to: sales@concretemender.com
I will put you in touch with a distributor.
Kelton G at Roadware
This really does break the rules, what a game changer! I have been hearing about this through word of mouth, have been in the industry for some years now. Will definitely be giving this a “crack”! Haha.
Thanks for the thorough write up!
– Dan
Your website recommends these products to be installed by trained professionals. I am in the concrete repair business. Where can I access Roadware-approved training in proper crack repair techniques?
Your local Roadware distributor can give you some quick training and get you set up with the product. Where are you located?
I love a product that breaks the rules! And it’s so true, most concrete cracks start as itty-bitty hairlines. Thanks for the great write-up.
are in Portugal. We liked this. So were or Who we van buy this products? We are constroction distributor.
Thanksernando Fernandes
035192689-8197
Hello,
Please contact Comace in Barcelona. http://www.comaceimport.com/en/
Thank you!
Are hairline cracks in new concrete normal?
Hairline cracks in new work are common. There are many underlying causes so I don’t believe cracking will be going away anytime soon. It is the nature of concrete to shrink as it cures. Cracking is part of the process.
I have a crack in my shop that goes full width – 30′. Would you recommend chasing the crack full length and apply material along the crack or do a static injection every so many feet?
Regards
Dave
Hello, If the crack is fairly clean and free is dirt and grease, I would us Easy Injection with a hole drilled into the crack equal to the depth of the concrete. So if your slab is 6″ deep, drill a 1″ deep hole every 6 inches. If the crack is full of dirt and grease, you will need to cut open the crack and get it as clean as possible before making the repair using Concrete Mender™ and sand.
My condominium property has several cracks in the concrete of the surface lot located above our underground parking garage. During periods of heavy rain water leaks through these cracks and into the garage below. Would your product be a good option for sealing these cracks? If so, who in my area could give me an estimate of the cost?
Hello,
Stopping water leaks is tricky, but can be done. Send me your contact details and project location to sales@concretemender.com
Thank you,
Kelton
Can you help me about the crack mender?
Sure, send me an email: sales@concretemender.com or calll us at 800-522-7623.
Kelton
Hello, Yes we can. Please contact me at sales@concretemender.com
Kelton at Roadware
What is the best concrete crack repair product?
Hello! That is a good question. I think a better question is what is the best crack repair product for a specific type of crack under specific conditions? Our Roadware 10 Minute Concrete Mender is great for many types of dormant cracks and structural repairs. It is very versatile and can be used in a wide range of conditions. Cracks that continue to move due to external forces my be better off with a softer caulking material. For a structural high-penetrating repair of cracks, micro-fractures and micro cracking, Roadware 10 Minute Concrete Mender is the best material and system we know of.
I have a concrete slab (5 inches think) veranda with a cold cellar below it. I had tiled over the veranda several years ago. I lined my cold cellar ceiling with 2 in white styrofoam.
I noticed the styrofoam got water stained and droppings on the floor. on the exterior I notice in almost the same place (I did not measure it) that the tiles cracked from the front towards the house . I removed the tile and sure enough this is a hairline crack under the tile…..
Any suggestions on to repair this barely visible but there crack???
Hello,
You may still have movement in that crack. You may want to look into a caulking product.
You have a very awesome article, everything was properly explained how things has been working, Thank you for sharing!
I had no idea that you need to cut a crack in order to repair it. It makes sense after you explained it. I’m okay with whatever makes it easier to repair.
I am interested how this 10 Minute Concrete Mender will help me on my projects.
Hello,
Please send me your contact information: Contact Roadware
Can crumbling concrete be repaired?
Possibly. There has to be something solid for repairs to bond with.
I am interested in where to get your product.
Hello,
Thank you. You can contact us here: https://concretemender.com/contact-roadware/
Is this product compatible with water based pool deck stain? I have hair line cracks I would like to fix.
The Concrete Mender itself would not allow the stain to penetrate the surface. Any sand added to the Concrete Mender repair would accept some of the stain.
Hi! How much does the concrete mender cost? In Orlando, we’ve got an auto detailing shop that needs some concrete repairs. Unfortunately, we don’t enjoy working on luxurious cars with large concrete cracks present… it just doesn’t display the same level of professionalism as we strive for.
Thanks in advance!
Hello,
You can find Roadware products and support at Coastal Construction Products if Florida. https://coastalone.com/
Thanks for posting this kind of article. Great help!
Thanks for posting an awesome article about Roadware 10 Minute Concrete Mender. I’m a huge nail-biter and have been looking for a solution to my problem! Your post was really helpful 🙂
Thanks for the article that you wrote . I really enjoyed reading it and learned a lot.
–Roofing Vancouver BC
How does this differ or work different with stained concrete used matchcrete prior on floor
working on suspended concrete floor with radiant heat with stained concrete used matchcrete prior to staining, but over time floor has developed cracks at joists and some untreated cracks have grown slightly, largest crack is not over 1/16th
Property owner would like to stay with stained floors but not sure how much discoloration we can expect with this or match Crete , matchcrete highlighted the crack and had to be ground flat since it exspands
Scott
Dualpurpose Construction
Hello, MatchCrete Clear all alone will make the concrete darker like it is wet with water. You can add colored sands or dry pigments to adjust the look and grain of the repair. MatchCrete Clear is UV color stable so the appearance should change much after application. See this link. https://concretemender.com/repairing-cracks-in-polished-concrete/
Wow! it’s really works, Thanks for sharing
–http://www.drywallhalifax.com
I really enjoyed your post about DIY concrete mending and found it very interesting. Thanks for posting.
Thanks for the great post on repairing hairline cracks in concrete! I’m a big fan of your blog. Thanks again for all the great work you do!
Awesome post
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