I have a very similar question. My new induction cooktop gets installed next week. The fabricator is going to route out the edge of the granite so that the cooktop sits down, but the appliance store and installer has mentioned that they can't install it flush because they don't have the high heat caulk needed. I can simply get it, if I knew exactly what I need. I have tried to research silicone and if it is ok to use on cooktops and I have seen different responses. Anyone know? I would really like to have the flush look on my frameless induction versus it sitting on top of the granite and being hard to clean. TIA for your experience!

Hi, vstock. I have been using my cooktop since we moved in in May and I really love it. The install was kind of a mess, though, as stated above. Here's how we ended up -- not completely satisfactory, but there you go. They removed the silicone and the foam strip that was supplied by the factory, to have a second go at installation. I called Thermador and they said that although the foam strip was not mentioned or pictured in their installation instructions, the cooktop always ships with the foam attached because of the need for some air circulation under the cooktop. They also said there is a very great chance of cracking the cooktop glass if the foam is not used. There are clamps that attach the cooktop under the countertop. My counters have a leathered finish that is not smooth, it has slight variations. The installer was particularly concerned because of these variations. So, my builder sourced a much thinner strip of foam (sorry, don't know where he got it), and that was used instead of the factory supplied. My cooktop still doesn't sit directly on the counter, and I have a small paintbrush to clean the crumbs out of the gap, but it is not the giant gap that the factory foam would have left me with. No silicone at all, because of the air circulation issue. Not ideal, but livable. No one but me ever notices the gap. Certainly, no one but me ever, ever cleans it! : - )))

Hello krishoel001, I bought the exact same cook top as you and the builder's contractor for the counter is saying exactly the same time to me about the 1/4 gap... When I bought the cooktop I was told this model is to be 'flush' to the counter...

btw, how you liking that cooktop and is that gap causing any problem? besides the gap, is the cooktop flat with the countertop? (I'm trying to visualize what it would look like as when I saw the model at the store it's exactly what I wanted)

Would you be able to send me a pic of what yours look like? =)