I had a new concrete driveway put in just before Winter last year. The last thing the contractor did was applied a penetrating sealer, which is supposed to prevent sand "pops" from the effect of freeze-thaw cycles. In the Spring I noticed quite a few of those "pops". I contacted my contractor, and he said that, although it was not recommended to apply a second coat of the sealer so quickly, he told me that because it was sealed, I could scrub the driveway with tri sodium Phosphate, and lightly power wash to remove the previously applied sealer, and then reseal. I did that and bought 5 gallons of the same sealer, and it seemed to get a good penetration, but I was short by about 2 gallons to finish. I then discovered Ghostshield invisible sealer, and although it is 1 gallon, the concentrate makes 5 gallons when mixed properly with water. I finished sealing my concrete with this product according to instructions, and it went on easily and seemed to penetrate the concrete better than the previous product. I could not immediately see any difference in the finish of the concrete, but after the first rain, the Ghostshield sealed part did a better job of repelling the water. I will not be sure until after another Winter, but from the looks of it, this seems to be the superior product. I am very happy I used it.Read full review
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