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Old 06-08-2013, 08:45 PM   #1
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garage concrete floor crack repair advice


I have a garage floor and the apron too that's cracked (see pictures). The house was built in 1952, so the floor is old. The crack hasn't changed in the 13 years I've been in the house. I've been repairing the cracks will caulking or cement, but would like any suggestions for a better approach. I am guessing that demolishing the problem area is the most likely approach. Thanks in advance.
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Old 06-09-2013, 05:36 AM   #2
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garage concrete floor crack repair advice


your garage floor sucks & looks like mine gotta go to work but will ck back in tonite,,, IF you gotta get this done today, wait til jomama or concmasonry show up,,, your trouble's not a big deal

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Old 06-09-2013, 09:10 PM   #3
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garage concrete floor crack repair advice


If you care more about integrity of the surface and aren't really concerned about looks there are several different epoxy mixes that can be used to patch concrete cracks quite successfully if they are no longer moving. The key phrase here is press "if they are no longer moving". If the crack flexes at all the epoxy will break just as quick as the concrete will.
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Old 06-09-2013, 09:14 PM   #4
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w/all the rain we've had in ga, bring in the $$$ has a higher priority than diy forums
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Old 06-09-2013, 09:24 PM   #5
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garage concrete floor crack repair advice


1st off, how do you KNOW they're not moving,,, what data or tests have you performed in 13yrs ? the easiest is patching w/plaster of paris,,, there are crk metering devices but the p of p's MUCH less expensive,,, my be is they have & for proof, look @ the jnt in pic 3 that was patched w/( ? ),,, see the crking & loss of adhesion ? part of the fault's due to an incorrect mtl & part's the fault of whoever picked it it may have been installed incorrectly but i'm guessin' its you.

some's already been replaced ( half moon ) altho improperly,,, 1 should NEVER place patching mtl across a moving jnt/crk,,, they ALL move ( change in size due to reaction to temp changes ) ask someone studying ki-skool fizzicks to explain why

IF it were mine in such condition, i'd cut out damaged parts & repl w/good conc placed according to good conc practices
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Old 06-09-2013, 10:48 PM   #6
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garage concrete floor crack repair advice


I have a home with the same problem.

Think of it as an opportunity to get a decent floor in and maybe make some upgrades.

For example, put a vapor barrier and/or some insulation under the floor.

Ever wanted a mechanic's pit? How about a floor drain in the middle? Would you like to have a sink somewhere in the garage?

Tear it all out, excavate out 8" of the soil that is under it, fill it with 3/4" roadstone a couple of inches at a time, compacting as you go.

I suppose the problem with most residential garages is that they are not deep enough to have a mechanic's pit in unless you leave the overhead door open or have someone drive the car over you and trust them to move it again.

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