Can I seal a concrete basement floor over narrow cracks?
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I have an unsealed concrete basement floor that was soaked with pet urine and would like to seal it with a product like Kilz; however, there are two thin cracks in the floor (about 1/8 in wide), one that is quite long. Can I seal over the cracks? If not, how do I repair them before sealing?
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https://www.doityourself.com/stry/how-to-repair-concrete-basement-floors
https://www.doityourself.com/stry/how-to-seal-a-basement-floor
Before you seal the floor.... take the time to use a pet urine eliminator such as Natures Miracle, AND I just found out that the different formulas can be SPECIFIC to cats or dogs.. We use the one in the RED jug... it says that it will continue working as long as "the food source" (the bacteria in urine) is present. It also works on the pheromone that attracts the dog or cat back to the spot. Pour or spray it on... and let it sit until it dries on its own (it needs time to work)
To repair the cracks... talk with an expert at your local home improvement store and get an epoxy repair medium for small cracks and follow the directions... THEN you can put down your sealer, whatever brand you choose.
I'd patch the cracks with a Concrete caulk first, AND try to remove as much of the pet urine as you can first -- would recommend a good degreaser and rinse -- if you have a wet/dry shop vac that would be ideal -- then use a sealer specifically for concrete ... and it has to be 100% bone dry for a good job --
You can find caulk for this in a home supply store like Home Depot. The caulk comes in a few different colors but if you're priming it color shouldn't matter. Good luck!
You have several different issues here (1) remove the pet urine stains/smells with vinegar or Nature's Miracle; (2) concrete crack - I have used Quickrite's concrete filler, you just squeeze it in the crack and smooth the surface; (3) seal the concrete with a Concrete Sealer - you can brush or wipe it on; (4) you might want to stain or paint the concrete after you seal it, be sure to paint or stain for concrete.