Crock pots and other brands of slow cookers will only crack under 3 circumstances unless they were defective to begin with.
Crockpot cracked countertop.
Clean the countertop well before repairing it.
Why the crock cracked.
Exposure to heat can also cause hairline cracking.
When natural stone is exposed to sudden heat the stone may crack this is called thermal shock.
They will crack due to quick drastic temperature changes if you try and use it on a stovetop or if you set it down too hard on the counter.
Remove the tape and clean the area.
Most of the time your crack is actually a small granite fissure which you should not worry about unless it is located on any area of overhang such as an island or bar area where if it cracks all the way through could fall and hurt someone.
Often it s not the intensity of the heat but the length of time the concrete is exposed.
You cooked something that started out frozen.
Granite countertops can crack and will crack under pressure or if hit by something heavy.
Thermal cracking from a crock pot.
Fill the crack with epoxy resin and smooth it down with the putty knife.
Allow it to dry according to the manufacturer s instructions.
Crock pots are a common source of heat related hairline cracks in countertops.
Once the crock is heated the temperature change initiated by the frozen meat can cause it to crack.
Although slow cooking is very safe a few things can cause a ceramic or stoneware crock to crack.
Always thaw poultry or meat before you add it to the crock pot.
By elevating the slow cooker just a little bit you can prevent the thermal shock completely.