pres589 (djronnebaum)
pres589 (djronnebaum) UltimaDork
3/14/25 4:31 p.m.

I've a garage that was built many decades ago, probably in the 1960's, and it was built with a floor made of multiple slabs.  They've pitched a little and spread a little.  Worst spread is about 1.5 inches wide which is great at swallowing bolts and small sockets.  And there's one slab that's about a half or more inches taller than its neighbor, leaving a ledge to trip over.

I'm not entirely sure what the most correct way is to fix this.  Cut the slabs up and haul out and have a new floor poured?  I'm not interested in the hot mud solution that I've heard about for this kind of thing.  And I'm sort of facing some budget challenges coming this year with some other home projects and some other things.  So I come here looking for feedback on a couple ideas and maybe get some product suggestions.

Thoughts on me cleaning out the spread joints with a shop vac to try and get as much junk out of there as possible and then using Quikrete to fill those gaps and pouring some out to try to smooth out the low areas to lessen the difference in heights between the high and low areas? 

To try and make this bodge job a bit nicer and maybe last a little longer, are there any affordable-ish snap-together garage flooring solutions that can bend a bit and conform to a not so great flooring surface?  I think that kind of thing would make this a lot nicer overall but I don't know if there's a go-to flooring to look at first.

If I can get five years out of this sort of fix, that's great, and at that point hopefully I'll have funding to change the floor professionally assuming I'm still in this house by then.

Purple Frog
Purple Frog Dork
3/14/25 10:54 p.m.

There are a lot of concrete floor leveling products on the market that could possibly work.  Many you mix to about the the thickness of a slurpee and pour and it self-levels.   A problem may be getting it to bond to the old surface.  But, might be worth a try.  You can get a reasonable amount of those products for your use for $50 to $150.

I have had good experience with them in residential use, not sure how they would hold up to car weight.   But can't be any worse.

Google "Concrete floor leveler"

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