I have a big crack on my garage floor. I need to fill it and level it out so that I can paint over it using that garage floor epoxy paint. Basically, I'm selling the house and I want to make the house look as presentable as I can. So, what product(s) should I use to fill the crack? Just a concrete repair kit? Cement?
Concrete – What’s the best way to fill in some uneven cracks in the garage and level it out so that I can paint over it
concretecrackgarageself-leveling-concrete
Related Solutions
Check the manufacturer's specs on the thinset you are using (or just call their tech support to verify).
Generally, if the variation in the floor is 1/4" or more then using your thinset mortar is usually not recommended for fixing it.
Even though you say it is 3/16", in my opinion, it would make life easier to just use an SLC
The proper way to do it would be to break it up and pour again. You might be able to get away with a self leveling compound that you pour over the floor then let it set.
I've used these before installing tile on concrete. I can't imagine what it would look like as a finish.
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Best Answer
The paint may cause you trouble, as most want concrete to have cured for 30 days, so make sure that the brand you use will work with your timetable.
The concrete repair products are best for cracks up to 25mm and similar depth. Larger than that would require a concrete patch 1st, filled to within 25mm of the surface. Then the repair patch (just a sanded mortar type) or a refinisher patch product, which can be troweled paper thin.
A concrete bonding agent (usually a latex based product) is used first, especially if any sealing was done previously.