SEAL / FILL / FIX / A CRACK IN CONCRETE DRIVEWAYS
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- Опубликовано: 18 мар 2020
- This video explains the causes of cracks in concrete driveways.
There are several types of cracks in concrete: Structural cracks, and shrinkage cracks.
Structural concrete cracks should be sealed to prevent water from penetrating through the slabs. When water penetrates into the soil that supports the concrete, soil may settle, creating a bigger crack over time.
Sealing a crack is not fixing a crack as most people think. Sealing a crack is the application of sealant (caulk) into the crack. The purpose of sealant or caulk in a crack is to just stop water leakage under the slabs and stop vegetation from growing in the crack.
Sealing a crack is inexpensive and must be done to slow down the deterioration of concrete. Remember, your driveway should never have open gaps. Expansion joints should be replaced, cracks should be sealed or fixed and your front yard must have grass.
Learn how we replace (fix) expansion joints.... • EXPANSION JOINT REPLAC...
Why replace concrete when you can fix it!
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Collect the dust made from grinding the cracks to sprinkle back on top to match the color.
I would have to pressure wash the driveway first, otherwise I would be collecting concrete dust plus ants, bugs, spiders and leaves 😆
Thank you for this video! The sand is genius to help it not stand out as much! We are in the middle of selling our home and inspector wanted us to do this, but it didn’t look too good after, but the sand helps to hide that stark grey sealant.
Great video with simple, easy to do instructions. Thank you!
Great video
Great video..
Good explanation
What do you recommend if I plan on painting my smooth concrete driveway instead of the sand can I just simply paint over the caulked cracks?
Bad ass video bro
Thank you 😊
thank you
Patio concrete out side of home is is not dry, will it work on the damp surface
How long after filling the cracks can you drive over it?
I think using a saw to open the crack draws more attention to them, to the repair, or maybe it's somehow less organic. I don't mind the look of the cracks as much as I mind that water keeps eroding the concrete and making them grow. I started using DAP liquid crack filler and found that in hot weather it's best to thin the product down with water and either inject it or pour it into the cracks even very thin cracks. It will either self-level or seep down and seal it lower in the crack. Wait a day and refill with unthinned DAP filler. I have an agraget driveway so once I have filled the crack I let them sit for a day or two and then paint or refill any de[sessions with filler and then cover with sand or fine gravel and let fully dry. Do it right and you can't see the filler at all. The driveway's almost 50 years old, poorly installed, never maintained, and is a turnaround point for every large truck coming down the dead-end road... in the world of Amazon that's a lot now. Some cracks were an inch and a half wide. I suspect that heavy garbage trucks pivoting on the corner started and have caused the majority of the damage. Using a pressure washer showed the bottom concrete panel looked like a crushed eggshell revealing cracks I couldn't see before being filled with moss and debris. 14 bottles of DAP crack filler and all the cracks I can find are sealed and filled, most are finished with sand and gravel, and the worst corner is sealed but still needs to be filled more. - photos.app.goo.gl/jADqdAj7QZTCSi9p6
Wow! That's commitment to your driveway. So in regards the opening and widening of the cracks, I do this so that the sealant, when applied, will be more wide than thick, otherwise the sealant will split apart from the concrete in the first couple of thermal expansion cycles.
In regards your wide cracks, I suspect the got that big because you may only have wire mesh as reinforcement instead of rebar. Anyways, if the crack is bigger that 1/4inch, I suggest you treat the cracks as expansion joints (for which I also have a video). You should install backer rod and top it with polyurethane or silicone.
I don't know about DAP active ingredients, but if it has acrylic, it will all get stiff and crumble in just 1 year. Acrylic sealant don't do well with UV rays.
Would you provide what’s is the sealant and where to buy it? Thank you for the video, it’s great 👍
Sika self leveling sealant. It costs about $17 at Home Depot
Which one looks better on top of sealant: Sand VS concrete mix powder??
Hi! Good morning! Just want to ask what kind or brand of sealant sis you used! Thank you!
Sorry for the late reply, I used SIKA Ceack Fix self leveling polyurethane. But there are many others, just make sure is polyurethane based.
nice
Yes sand on top is important and a nice step to finish job, don't skip this step.
Great video - thanks. What tool do i buy to clean out the crack? Can this tools be rented/
angle grinder
Fill the cracks with GE 100% advanced black silicone! Works great!
If it is black, I think it will stand out a lot. Most of my driveways are light gray, if not almost light tan after a pressure wash. But thanks for the feedback, I will look into it.
Is the grinding disc V shaped or do you make a V shaped channel. Any suggestions on V shaped grinding disc and Polyurethane sealer? Thank you
Yes, it is V shaped. Available online only or concrete doorfront stores. I use Sika, but you can use any brand. Most important is to not use acrylic based sealant.
what is meant by sealant is less than its width at 1:42?
Are you able to paint over the sealant to try and match the concrete? I had collected a jar of dust to sprinkle on top but i had a bit of cleanup to do and forgot 😢
Concrete dust is the best. First, concrete should be stained with transparent stains, as non-transparent stains typically peal of in few years. Second, you can stain if you had applied some sand of concrete dust over the polyurethane. Basically, the sand is what gets stained. Polyurethane itself is not very good with transparent stains. You can always remove the polyurethane with a grinder to do the job again, but it is a lot of work.
@oliveraguirreconcreterepai4826 Thank you for the reply. I may just leave it. The stairs will cover it anyway. I'm just meticulous about things and will always know it's there lol
what happens if you don't bother with adding sand or backer rod, and just inject a bunch of sealant into the crack instead? And apply more after the first application is dry?
If the sealant is not thin, it will not be elastic, if the sealant is not elastic, when concrete shifts due to thermal contraction (night time) the sealant will split away from one side of the slab. This can happen within just few days. And the worst part is that removing thick sealant is time consuming. Better do it right from the start, safe money on sealant and do the work only one time. And if it still splits, removing properly installed sealant takes less time than thick sealant.
@@oliveraguirreconcreterepai4826 okay thank you!
Is there sand that have similar grey color to driveway that you can buy to top it off?
Same question… I was thinking concrete power on top. I’ll try it
@Fredy Gonzalez just collect the dust from grinding the crack.
what if I sprinkled quickrite instead of fine sand for a better match?
Cement will hydrate and harden when water touches it and this will stiffen the repair. In order for the waterproofing to work, the sealant has to remain flexible. So it's better to just broadcast concrete dust or sand over it.
What product did you used? Is that self leveling???
This is the typical self leveling polyurethane from SIKA sold at Home Depot or Lowes.
I cant find the answer to how long the seal when sealing cracks lasts 😭😭, specifically expansion control joints and smaller cracks too
The material itself should last about 5 years before it starts degrading. Sealants are only meant to withstand thermal expansion and contraction. But if your driveway is already undergoing heavy settlement due to bad soil, then the sealant will split due to the settlement forces that are are pulling the concrete down or up. But still, sealing cracks and Joints is a much better option and much more cost efficient than replacing the driveway. Waterproofing all gaps and cracks can buy your driveway more time
@@oliveraguirreconcreterepai4826 I see. Thanks for the reply. That info really helps me out
I'm confused.....You blew out the particles, but poured sand in?
Blow of the fine concrete particles that are the result of grinding the crack. Then, if the crack is wide, you have to install something to prevent the sealant from leaking through. That why we install backer rod or sand. Pay attention to the audio "side walls of the crack should be clean". So regardless of using backer rod or sand to fill up the crack, make sure to leave room for the sealant.
Which sealant to use?
SikaFlex. Can be found at Home Depot.
Looks like a good functional fix but not happy with it cosmetically. Makes the crack stand out even more.
Yes, but if you don't waterproof a crack, subsequent structural damages will follow.
Yea there’s not a real solution that can cosmetically make a cracked slab look good again.. you have to replace it
@@brandoncontreras7538 the only way to truly hide a crack is to resurface the whole concrete with a fake stone overlay. And hiding the cracks in fake Stone joints... I have done this before. The crack will reappear, but and I will then have to be sealed with the same method as in this video, but you truly won't see them. This whole process does come to be very expensive, but still not as expensive as a full scale concrete replacement.
Whar type of cement and sand? Thank you
Don't use cement! Use polyurethane based caulk, typically found at the concrete aisle of the hardware stores. And in regards the sand, just use any play sand of your preffered color, just make sure all grains have the same size and are as small as possible.
Nice Job, but did you actually say "unexpensive"?
Did you actually ask such a stupid question?
You need to use a small “j”, not capital “J”, for the word “job”. Also, you need to add a period, or an exclamation mark (your choice), after the word “job”. Not a comma! Then, the new sentence starting with the word “But” is written with a capital “B”.
👀
@@mikeike7114 The capital "J" was for emphasis. Comma is fine.
Gosh darn itt
Lol
Too late for the sand trick ....
I have a huge crack and used a whole can of this material to fill it 😅
I hope you filled the bottom if the crack with sand or backer rod. And just topped the repair with the polyurethane, as in the video.
Looked worst then the original crack.
Agree! But if you leave it open it will get worse over time. And if you use concrete to fill the gap, It will recrack within a week. Also, if you resurfacing the whole driveway the crack will still come back.
I thought the same thing!!!
What a shitty way to do it. That little blade and you have to bend over.....y ouch
Yup! If you do it with long attachments, you don't really get the crack propperly shaped.
“fast and unexpensive” lol
😂😂😂😂
He not very mind powerful very soft genitalia
I'm sure you're English is perfect Grammar Boy...this is obviously not his native language but I'm sure you have great Grammar in multiple languages 🥸