The crack should be considered an expansion joint. Grind it out, clean it, backer rod then a flexible filler made for expansion joints. The slab will always move…
That’s an expansion crack due to no joints cut in it. Has nothing to do with base is NOT a structural issue, two separate slabs now that expand…this “fix” will not last…Period.
@@markme4 if I had done the job first day, there wouldn't have been a problem, and for time and a guaranteed fix, if I was to repair that, the first thing I would do is remove all the concrete and do the job correctly 👍🏼
I have all the tool brands. That ryobi grinder I obtained reconditioned for 20 dollars as a backup 4 years later still works. I left it in the bed of my truck several times(rain and snow) and still works whenever I need it.
That’s an expansion crack due to no joints cut in it. Has nothing to do with base is NOT a structural issue, two separate slabs now that expand…this “fix” will not last…Period.
yeah i get the sealer, accoustic type into the crack similar to the stuff they inject into the roadway cracks because it remains plyable, doesnt every dry completely, then patch over it. no matter what you do, the crack will always come back to hairline because the pad is moving, stablalize the pad is expensive this isnt the cistine chapel, best just to patch with grout non shrink slow setting ,to keep the hairline to a minimum. fast setting shrinks unless you get the special proprietary mixtures. regardless, slab is not stabalized. nice work, i guess. but this would have cost me 5 bucks worth of grout and some good masonry adhesive.
@@Billybob-go8hn maybe not it depends if the floor is still moving. If it is it will continue to crack it's that simple, this method cannot stop a foundation from moving
Everyone commenting on this being a patch job and it cracking again but nobody knows the situation without actually assessing it. If the crack was there as movement for a reason and that movement has stopped, doing this is perfectly fine. Hard filling or soft backer rod filling are two completely different solutions entirely dependent on what caused the crack in the first place. There isn’t a straight answer until you know the full story.
First off all I would want to know what caused a crack that lint and secondly IF it can be repaired it should be cut out and treated as an expansion joint
Concrete isn't my area of expertise, but I really have to pause for a moment when the crack is a solid half inch wide and extends across the entire building. Something ain't right. Just saying.
Good work, but a long thin 'patch' is not a 'repair'. Nothing done here helps make the slab intact again, and this is at best cosmetic, as there was no way to 'repair' under the wall. People mix up the words all the time, just make sure you understamd what your contractor is doing. In some cases the silica sand will seem to fill forever as the gravel base and vapour barrier below the slab has sunk away, and only the rebar grid is holding it together, and unless you fill that void movement will cause the crack to reappear. A repair would fill that void first (some sort of sprayfoam process normally which bears the weight and also insulates) and dramatically reduces the probability of needing to redo the patch. As always buyer beware.
From the wide angle shots looks like no expansion joints were used, zip strips etc. This crack is not from settling. Unfortunately too many unknowledgeable people here. The concrete made it's own expansion joint. If it was settling you would see elevation change from one side of the crack to the other. This is well within specs for a crack in concrete especially without expansion joints of some sort. But many are correct, it will crack again. In fact find me any concrete contractor that will guarantee that his concrete will not crack, and I'll show you a guy out of business in 6 months.
What have you really have a true foundation, crack, silica sand and that grinding is just a temporary fix that might be for minor cracks but if you have an actual foundation crack that went from one end of the foundation to the other, I did not suggest this because that is a temporary fix and if you’re selling the house, it’s better to go ahead and get it fixed and cut your losses when you’re ready to sell the house
I had the same exact problem on my old house. I found out that the problem was caused extensively from having the wall outlet covers not tight enough, they should have been tighter than that. Because they were loose, they were shaking from some occasional wind turbulence and that Rumbled through the floor and cracked the floor. It really bothered me for about 23 weeks and I finally had to get some cocaine to calm me down.
