How To Fix A Large Crack In A Concrete Sidewalk | Surprising Results!

so what do you do if you have large gaps that are over one inch and maybe irregular in shape like i have here on an entrance sidewalk it's actually an easy fix and believe it or not the key is a pool noodle so let's jump in i'll show you how to fill these gaps and then seal them so you don't get weeds and grass coming up through those gaps and also you don't get water flowing into the gaps because if you're like me in the midwest with the freeze thaw cycles that can start to heave your sidewalk so then you start to have lips which can be dangerous especially when it's on an entrance sidewalk like this one i'll start off by doing a little pre-work by using this nylon cup brush wheel on my drill what i'm doing is i'm just cleaning off the concrete edge itself because that's where the seal will bond to just getting dirt and debris off on both of the cracks that i will be working on now also if there's some exterior caulk like there is here which is not the right product to use you're going to remove that during this pre-work as well so here is my better looking of the two gaps i need to fill and now with all the dirt and debris knocked off it's really a three-step process i'm going to fill any of the larger voids just with some standard play sand you can get at any home improvement store if you had a consistent gap half inch 5 8 of an inch three quarters of an inch all those can be filled with the standard backer rod so just some backer rod that you'll find at your home improvement stores one inch i don't find readily available in my area so i need to get it off of amazon and you'll see that link in the description that would work okay at the start of my gap here but and i could push that down and it would reach resistance i press it down and then i do the last step step three which is the sealant on top but once i got over here it would not so i'd either need to double up this back rod which i don't love doing or find out a new plan because one inch is about as big as it gets and this is just a polyethylene foam which is exactly what a pool noodle is so i'll be able to cut this custom size to this gap and it'll work great as a custom fit backer rod and then the last step is the sealant so i'm using this which is a vulcan 45 ssl that is semi-self leveling i also like a secret product but that is completely self-leveling so if you have a gap like this and it is not level that self-leveling products just going to go to the low side and then it will pool up or it will flow out of your gap with this semi-self leveler it's a little more forgiving and if you have just a little bit more of a slope it'll still fill that gap and result in the solid seal but this is why we clean up that surface so the vulcan 45 ssl will have no problem adhering to the concrete making a great seal and there is one small tip at the end which i'll show you to help blend it now sometimes between step one here where we're filling in the sand and then step two where we're fitting this pool noodle and cutting it down to the size of our gap you might have to go back and forth you might get the foam in the actual gap and notice that it's sitting up a little too high so you take the foam out knock down your sand a little bit and kind of go back and forth to make sure the foam is below the level of the concrete so the seal will actually have something to sit on top of so this one's a little easier the second one is gonna be a little bit harder one it's gonna take a lot more sand to fill up and two this is a lot more jagged and just gonna be a little bit harder to cut but you can cut in multiple sections so here i'll just cut half of the foam fitting it down within the gap and then you can do combinations too if you have one part that is consistent you could just use standard backer rod for that small section while you're custom cutting your pool noodle to fit the more jagged rough areas now make sure you don't leave any gaps if you leave gaps your self leveling or semi self leveling seal it will end up draining through that gap and cause a divot in your finished seal so step one step two completed the last things i do is i do close off those ends here all that is is just some duct tape and then i double it back here so you do not have a sticky portion in the middle so the sealant won't stick to that once it dries and you remove it so then that will allow the sealant to go over and kind of close off that end and then i just confirm that the backer rod or this custom cut pool noodle is not too high and that it's fit snugly you do not want it to float up that's kind of a classic misstep is it's not tight enough or it's too high you once then you start applying your sealant and you have a high point sticking out of your sealant just do all those checks then once you do that i would do one last shop back cleaning up all the sand or any loose debris and apply the sealant foreign so then i let the sealant set up for about 10 minutes and sprinkle on some sand this will help blend the actual sealant into the sidewalk but it will also keep out leaves and bugs and twigs and mulch especially if it's a windy day as the sealant's starting to set up and then here's what the finished product looks like so overall it's a very approachable project and especially if you do your step one and step two and kind of get everything set ready to go that sealant is just going to go in super easy and then you can sprinkle on the sand to get the look you're going for to kind of match your sidewalk or driveway now remember these types of cracks and heaving in sidewalk often is because you have an issue with your downspouts or your gutters so check out this video right here i'll show you the good better best options with getting downspouts rerouted in the water away from your home so you can avoid issues such as this so thanks for joining me on this video and we'll catch you on the next one take care

Channel: Everyday Home Repairs

Views: 2,778,711

Keywords: everyday home repairs, DIY, concrete crack repair

Id: gWcMP_aAHHA

Length: 7min 18sec (438 seconds)

Published: Fri Jul 01 2022