How to fix garage floor (huge cracks)

[warlock1954]

It's tough to evaluate by pics but it is possible to repair and resurface. There are many methods and systems to properly do it as well. I can say that I have successfully repaired similar looking floors. Now, before every other "expert" gets their curly Q's in a twist, remember I said it's tough to evaluate via pics. I have walked away from floors before....

Here is a recent project....huge crack...the settling caused it and excessive moisture came through because of it. Notice the repair is unnoticeable. We diamond grinded, crack repaired, waterproofed and did a double broadcast polyaspartic chip system.

I have just found and joined the board here. I live in southern Mississippi and built a 25 x 32 shop. Had the slab poured about 2 months before putting the shop up. Mine is made by US building . Anyway I had red gravel put in and had a contractor do the dirt work and another to pour the slab. I have noticed I have some cracking in my slab. In one spot I had drill to mount my tire changer and noticed the thickness less than the 3 1/2 inches I was suppose to have. It has been a while since having the slab poured and wondering what would be a good way to confront this issue. Any help would be much appreciated. I can also post some pictures if needed.
Thanks, David

 

[ConCretin]

Warlock, If I read your post correctly, you contracted for a 3 1/2" slab and got less than that. I hate to say it but 3 1/2" is marginal at best for a shop slab. How much less did you actually get. What is there for base material under your slab?

Normally I wouldn't associate cracks with slab thickness but there does come a point where structural failure is a possibility.

Can you post some pics? Maybe start your own thread.

 

[peghead]

Your floor looks like mine. Mine needs a new pad also. But as long as it doesn't start sinking I'm not gonna worry. It can always be redone later. I do plan on getting some crack repair, it may not work great but at least the cracks will look better. If you do lay concrete with a new pad I would make sure it is reinforced. Would probably help make it stronger and keep from cracking so much! But with that said, even new concrete pads will crack after a while, so even if you do lay a new pad, you may still get cracks, but they won't be in that severity. Or at least not a structural problem.

 

[GreenScrew]

Digging up an old post looking for related advice of my own. Having issues with what appears to be heaving/cracking in the center of the floor as you can see the large gap at the bottom of the garage door on both sides. You can also see water enters into the garage (due to snow melt in this spring picture). Garage is 28x34, I've been owner of it for 2 years. Garage was built about 10 years ago. There is clearly a grading issue; garage is built on a slight hill and the driveway slopes down towards the garage (garage door faces the hill side, driveway comes down hill and turns at right angle to the door). The garage has a full "bunkhouse" above it, and to top it off there are no gutters. So I'm getting water down the driveway and off the roof, all coming together at the door. Clearly I need to get the water issues under control, but my question is regarding the repair of the floor. I'm going to need a drain across the front of the door, because there is no way to grade down and away with the hillside and in conjunction to the house. There is a floor drain in the center of the garage, but it is pretty much the high spot of the floor as the entire perimeter seems to have settled and water all runs towards the perimeter. I have a hard time trusting the local contractors to do things right so seeking opinions on taking care of this properly. Location is northern Wisconsin. Also possibly, its the sides of the door that have settled from weight of the structure where there is no weight under the door?

 

[36truck]

Greenscrew you have some serious issues. That's a lot of movement & settling going on. What does the outside look like. Any way to correct the drainage out side first? Also the roof gutters will be a big help. Then tear out the whole slab fill and compact the base then put down new concrete.