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10-20-2009, 07:47 PM
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#1
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Newbie
Join Date: Oct 2009
Posts: 2
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Proper methods to fill concrete gaps, holes, cracks and resurface concrete
I have a concrete front entryway which up until a few months ago was covered by gray "Astroturf". I removed that because it had become moldy. Underneath was the concrete in the condition you see in these pictures. I would like to do the following by myself if I can because I am currently unemployed:
1. Fill the gaps you see in the photos. There are 2-8' horizontal gaps that measure 1.5 inches and 1 inch wide respectively. There is also a 2 inch vertical gap that is approximately 8 feet wide as well. While they may not be necessary to fix for function, they do detract from the look, or potential look, of a fixed up/cleaned up patio.
--- Question--what is the best method to repair these gaps?
2. Fix the large quarter inch deep hole in the concrete, that can be seen in the photo "quarter inch deep hole..."
----- What is the best method to repair this hole?
3. Repair the small cracks that run on the top of the conrete patio. The larger one can be seen on in the photo "crack on top of patio"
----- What is the best method to repair this crack?
4. Clean up the entire horizontal and vertical surface of the pad. I was going to use a diamond tip rotory sander tool from a rental shop....would that work? There is old paint, adhesive and some small pieces of carpet still on the concrete.
5. After cleaning what do I need to do to prepare the surface for staining or painting?
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10-21-2009, 05:56 AM
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#2
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Member
Join Date: Jun 2009
Location: atlanta
Posts: 469
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Proper methods to fill concrete gaps, holes, cracks and resurface concrete
1st, 4Kpsi pressure wshr & turbo nozzle,,, if that won't remove all the glue, elec grinder & diamond turbo cup wheel,,, resurface w/polymer-modified cement - we use eliteCrete - w/wither integral color OR acid-stain it.
' horizontal gaps ' don't get ' repaired ' but sealed,,, need backer rod & sealant - we use sika polysulfide OR polyurethane OR 100% silicone.
the ' divot ' will be repaired when resurfacing.
' small cracks ' that are cosmetic will be fixed by resurfacing,,, we'd v-cut the larger & fill w/epoxy loaded w/fine aggregate,,, it'd be necessary to sawcut new control jnt alongside preventing crk from reappearing.
don't waste your time w/paint - it NEVER sticks to conc,,,coatings do, NOT paint,,, 1 last point - there isn't ANYTHING that'll be a help that's avail at apron stores,,, if you're out of work & really WANT TO WORK, call your eliteCrete distributor 
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10-21-2009, 11:33 AM
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#3
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Newbie
Join Date: Oct 2009
Posts: 2
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Proper methods to fill concrete gaps, holes, cracks and resurface concrete
Thank you for the reply. I have a question about your following statement:
' horizontal gaps ' don't get ' repaired ' but sealed,,, need backer rod & sealant - we use sika polysulfide OR polyurethane OR 100% silicone.
I thought of using wire mesh as a backer but did not think I could get it deep enough. It would really have to be close to the surface which I don't think would work right?.
Where can I find the backer rod you mention? Is it similar to foam backer rod you would use in caulking, If so how do I find a piece wide enough? The widest piece I can find is 5/8 of an inch. There is really nothing for the backer rod to rest on in my scenario. It would have to be held in place somehow.
Again thank you for your help!
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