I just power washed my 3 year old concrete driveway in prep for sealing. I have a hairline crack and a number of spots with spalding. Each spot is about the size of a nickel and maybe only 1/8" deep. Home Depot carries tubes of "GE Silicone II Sealant for Concrete & Masonry" and "Sikaflex Concrete Fix" in a tube. I thought I'd use one of these for the hairline crack, but am not sure if either would be better for spalding than Premixed concrete patch. I intend to put liquid sealer (Behr #980 Concrete & Masonry Waterproof). Here are my three questions: (1) How to prep spalding, e.g., make the dent deeper? (2) What should I use to patch the spalding (Concrete patch or tube of filler, or someting else? (3) Is GE better than Sikaflex?
I'd appreciate any advice on any of the questions.
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