How to Fill, Seal, and Repair Cracks in Concrete | Concrete Repair

Concrete Expert Dirk Tharpe shows you how to repair concrete cracks the right way. Cracked concrete can indicate a deeper problem – the trick is getting the slab sealed and stabilized while you gameplan your next steps.

Sakrete Pro Tips: Get the Job Done Right
Go beyond the basics of concrete work with Sakrete Pro Tips. From new construction to repair and everything in between, our experts will share insider knowledge earned over decades to help you get the job done right every time.

#Sakrete #ProTips #CrackRepair

0:00 - Welcome to Sakrete Pro Tips
0:20 - Cracks vs. Joints
1:05 - Diagnosing the Repair
1:29 - Surface Prep
2:21 - Choose The Right Product
2:38 - Concrete Crack Filler
3:57 - Concrete Repair
4:57 - Polyurethane Non-Sag Sealant
6:14 - Polyurethane Self-Leveling Sealant
7:36 - Reviewing the Products

[TDBear-bszl]

Exactly what I came here to see, thanks for your southern hospitality and knowledgeable input. 😊

[ShaunButterley]

That was exactly what i needed to see. Thanks.😍

[greyaye]

This was super useful for a first time homebuyer that found some cracks I needed to seal. Thank you!

As a side note, you're using "viscous" in the exact opposite way from its definition. Viscosity is resistance to flow, so if something is very viscous, it's very resistant to flow. Low viscosity is like water/oil, high viscosity is honey/magma. So if that stuff is extremely viscous, it won't flow down into a crack.

[billmitchell]

Thank you so much with your great explanation of each product and their uses. I have two problems, my crack between concrete garage floor and block wall varies between 1/2" to 3/4" wide and the depth varies from 1" to 2" deep. The bottom of this space is all dirt. So I guess my first step is to level with sand? I have tamped down the dirt.

[jqzpkfr]

Sissy, thanks for this video, very informative, now to measure and get some sand. Love needy sis

[arthurrodesiler]

Best thing I have found is liquid nail and a putty knife to spread it. May have to do it a few times. It is cheap and it last as long as the expensive stuff. Its not the right color but it works and is cheap. Only last a few years in the winters and a crack shows up as much as liquid nail. I have also used bondo that they use for body work on cars. I use both depending on the crack. Bondo if you want a smooth surface is fast with a belt sander.

[richardreyes]

Great information. If I want to fill a crack and then use concrete stain to stain the concrete walkway, which would you recommend?

[Imjuslookinatthis]

It would be nice to see you do a long vertical crack!

[Spratlyk]

Thanks for the information! Really appreciate it! I would like to fill/cover a controlled joint in my garage in preparation to applying epoxy finish on the entire surface/garage. What is the best product to use? Thanks!

[richardhausman]

Thank you, question. A big oak tree fell amd pushed our concrete fountain over. It has some cracks but not broken. Some cracks are deep and some not so much. I would like to be able to put water in it again. What sequence of products do you recomment?

[ZarpeParadise]

That was great and answered my question about using polyurethane base product. Unfortunately, this brand is not available in Costa Rica but EXCELLENT explanation!

[brittanyanderson]

I have cracks that have triangled to the point where a chunk of concrete will probably fall off either side of my porch if not addressed soon. Is this better left to a repair company, or can we repair ourselves woth these products? Wonderinf if we should break off the pieces and use the method you used on the Edge video...

[jackfrost]

Which would you recommend for a crack in a vertical concrete column that’s holding up a basketball net?

[daddypapi]

Hi, which one would work in a cove-joint in the basement that’s about 1.5” wide? Will it prevent water from coming through. Or do you recommend a different product like hydraulic cement? Thank you.

[keningilbert]

My garage is a wood shop. I have equipment rolling around and the control joints are a pain to try and tool over. Which product would create a solid surface to roll over?

[JP-xotq]

Had to leave for an emergency after applying the Sakrete concrete crack filler. Never got to remove the excess and now it's dry. Could I sand it down for a better look since its near my main door?

[anthonynotarino]

What would you use to fill a crack has gone through to the ground ( Dirt ) and I want to resurface over the repair after it is complete ? What product in your line would you recommend... I will use the Flo Coat as the top coat, not sure how to handle the wider and deeper cracks...

[michaelsnarr]

How do I fix a crack in slab that is less than 1/16” wide?

[andrewpolasek]

Since concrete is porous, why is water intrusion an issue through a crack in a driveway?

[MrBill]

Better close up needed. Seems to be a lot of overlap between products making it unclear except for self-leveling which is best.