Product review (5 stars): on cooktop if used twiec daily for actual cooking. It adheres well, has not come off yet
I read reviews that stated that it "melted" or something and I must say I am thoroughly skeptical.
We're not a microwave household, we cook everything and the stove is used everyday for lunch *and* dinner.
We do not eat out much either, once or twice a month.
With all the cooking that gets done in our kitchen, if it had any remote chance of melting, it would have by now.
I'm not saying some people's didn't melt. I'm saying this product, unless defective upon deliver, has basically no reason to melt.

In our case, the one we got fits the bill, is level between our granite counter and our cooktop for a nice looking continuous surface and no more spills in the crack.

Couldn't ask for better.