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Old 08-20-2017, 10:47 PM  
stanigator
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Join Date: Nov 2007
Posts: 25
Default Need help for product selection and preparation

See attached photos for what I'm trying to patch up (the gaps appears to be too big to be fixed by a crack sealant economically).

The selection is quite overwhelming. Which of the following product would you recommend using?

(1) https://www.homedepot.ca/en/home/p.e...000522539.html
(2) https://www.homedepot.ca/en/home/p.c...000684674.html
(3) https://www.homedepot.ca/en/home/p.g...000142883.html
(4) https://www.homedepot.ca/en/home/p.3...000104552.html
(5) https://www.homedepot.ca/en/home/p.a...000183098.html
(6) https://www.homedepot.ca/en/home/p.m...000682025.html
(7) none of the above; other

In addition, in order to properly patch over these cracks, do I need to remove the top part of the old concrete patch (using a chisel or jackhammer), or can I apply the patching material directly on top of the old patch after removing all the dirt?

Thanks in advance for your help.


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Old 08-21-2017, 06:00 AM  
jeffmattero76
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If those are the control joints, i would recommend the self leveling concrete caulk. I would do the same where the sidewalk meets the stairs. Any concrete product is not flexible and will likely just crack again.
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Old 08-21-2017, 09:06 AM  
Snoonyb
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Clean the joints and use a polyurethane caulk;http://www.homedepot.com/s/sikaflex%...20caulk?NCNI-5
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