I will tell you a tip from someone(me) that used to work with this company.
They sell good products; that is geared for that semi pro quality at a reduced price.
I have used their products for crack filling. The gray and the black.
Both is made for homeowner use and not necessarily from pro quality product usage.
Both shrinks or splits from the surface.
I use SL-1 for concrete cracks and quality sealers from Lansing Com.
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